Great item, cheaper than your local hardware store and very strong I use them on our frame machine.

Strong and seem very heavy duty

I couldn’t imagine them failing ever for anything

I use these on several chains for my equipment and they are very well made

The G80 Clevis Eye Grab Hook,5/16" Heavy Duty Chain Hooks, Forged Tow Trailer Safety Hook with 4,400 LBS work load limit are strong and work perfectly with 5/16" tow chains. They're sturdy and have a durable red paint coating that holds up well against corrosion. They are quick and easy to install using 5/16" U-type clevis. They bind well with chain when used in loop configuration and hold well with their spring loaded gates. I'm very satisfied with these G80 Heavy Duty 5/16" Clevis Eye Grab Hooks and consider them an excellent value!

These are really nice heavy duty clevis hooks. Wow, no doubt these are worth the price. They are heavy and look well made. Great product.

Nice hooks - was looking a good option for a hoist I am building. These will definitely fit the bill. Strong and well finished - should be perfect.

Let's unravel this headline description about this hook thingy, the markings on the hook, and see if it works. Okay, let's get started.To the Point or TL;DRIt is an Eye Foundry Hook Not a Clevis Eye Grab Hook. G80 is a Lashing Chain grade. Marks on hook SWL-3T mean Safe Working Load @ 3 tons or tonnes. SWL is no longer used in U.S.A. or Europe. Is it 4,400lbs or 6,600lbs max load limit or 6,000lbs SWL? 4:1 Safety Factor (SF) is a factor of safety and is calculated differently for different products. It works, although I haven't had it anywhere near its SWL max.Esoteric Engineering - I live to learn.A clevis fastener would have a "Clevis" pin through the top portion. The clevis is a U-shaped piece with holes at the end of prongs to accept the clevis pin. This is an Eye Foundry Hook. Hook design is really a product of how it will be used. Foundry hooks are used just for that...Foundry work. Usually these kind of hoods are welded onto the chain, not connected by pin.G80 (Grade 80) has nothing to do with this hook. It is a grade of lashing chain steel alloy renowned for its toughness and ability to withstand heavy loads and harsh conditions.Markings SWL-3TThis is raised on the hook and SWL is Safe Working Load which is no longer used by USA or Europe because it was to vague. It was replaced with Working Load Limit (WWL) standard. The interesting part is the 3T. So in the description and pictures there is conflicting information. It says it holds 4,400lbs and also 6,600lbs max load limit, and the stamp says 3 tons (6,000lbs) or is it tonnes (6,600lbs)? 2,200lbs or a Metric Tonne is a lot of weight to be lifting without the added safety. So which is it? Don't know.4:1 Safety Factor (SF) or Factor of safety (FoS) means if a hook can handle a Minimum Breaking Load (MBL) of 2,000 lbs would have a SWL or WLL of 500 lbs if a safety factor of 4 (4:1, 4 to 1, or 1/4) is used.Speaking of safety, there are not Reference marks on the hook. A reference mark allows you to measure if the hook has been bent because the distance between the marks would change.How I Use ItI keep one in my truck as a just in case tow, winch, weapon need and one at home for light lifting & towing. I'm not using anywhere near it's max load limit (whatever that may be).My ThoughtsIt's a decent Foundry Hook and can useful in many situations. It would be nice to know just what it's limits are in case I need to push it. Just be aware of it's limitations for your safety and those around you. Next time I'll buy something local with all the appropriate markings to be sure.That's my story and I'm sticking to it. Hope it helps!All the best, Just BenjaminReviewed: Brand: Hyecen Cost: $26.99 at time of review.G80 Clevis Eye Grab Hook,3/8" Heavy Duty Chain Hooks,Forged Tow Trailer Safety Hook with 6600Lbs Work Load Limit Capacity for Hauler Hitches Wrecker Truck,Clevis Grab Winch Hooks for Lifting（2pc)

Great item, cheaper than your local hardware store and very strong I use them on our frame machine.

Strong and seem very heavy duty

I couldn’t imagine them failing ever for anything

I use these on several chains for my equipment and they are very well made

The G80 Clevis Eye Grab Hook,5/16" Heavy Duty Chain Hooks, Forged Tow Trailer Safety Hook with 4,400 LBS work load limit are strong and work perfectly with 5/16" tow chains. They're sturdy and have a durable red paint coating that holds up well against corrosion. They are quick and easy to install using 5/16" U-type clevis. They bind well with chain when used in loop configuration and hold well with their spring loaded gates. I'm very satisfied with these G80 Heavy Duty 5/16" Clevis Eye Grab Hooks and consider them an excellent value!

These are really nice heavy duty clevis hooks. Wow, no doubt these are worth the price. They are heavy and look well made. Great product.

Nice hooks - was looking a good option for a hoist I am building. These will definitely fit the bill. Strong and well finished - should be perfect.

Let's unravel this headline description about this hook thingy, the markings on the hook, and see if it works. Okay, let's get started.To the Point or TL;DRIt is an Eye Foundry Hook Not a Clevis Eye Grab Hook. G80 is a Lashing Chain grade. Marks on hook SWL-3T mean Safe Working Load @ 3 tons or tonnes. SWL is no longer used in U.S.A. or Europe. Is it 4,400lbs or 6,600lbs max load limit or 6,000lbs SWL? 4:1 Safety Factor (SF) is a factor of safety and is calculated differently for different products. It works, although I haven't had it anywhere near its SWL max.Esoteric Engineering - I live to learn.A clevis fastener would have a "Clevis" pin through the top portion. The clevis is a U-shaped piece with holes at the end of prongs to accept the clevis pin. This is an Eye Foundry Hook. Hook design is really a product of how it will be used. Foundry hooks are used just for that...Foundry work. Usually these kind of hoods are welded onto the chain, not connected by pin.G80 (Grade 80) has nothing to do with this hook. It is a grade of lashing chain steel alloy renowned for its toughness and ability to withstand heavy loads and harsh conditions.Markings SWL-3TThis is raised on the hook and SWL is Safe Working Load which is no longer used by USA or Europe because it was to vague. It was replaced with Working Load Limit (WWL) standard. The interesting part is the 3T. So in the description and pictures there is conflicting information. It says it holds 4,400lbs and also 6,600lbs max load limit, and the stamp says 3 tons (6,000lbs) or is it tonnes (6,600lbs)? 2,200lbs or a Metric Tonne is a lot of weight to be lifting without the added safety. So which is it? Don't know.4:1 Safety Factor (SF) or Factor of safety (FoS) means if a hook can handle a Minimum Breaking Load (MBL) of 2,000 lbs would have a SWL or WLL of 500 lbs if a safety factor of 4 (4:1, 4 to 1, or 1/4) is used.Speaking of safety, there are not Reference marks on the hook. A reference mark allows you to measure if the hook has been bent because the distance between the marks would change.How I Use ItI keep one in my truck as a just in case tow, winch, weapon need and one at home for light lifting & towing. I'm not using anywhere near it's max load limit (whatever that may be).My ThoughtsIt's a decent Foundry Hook and can useful in many situations. It would be nice to know just what it's limits are in case I need to push it. Just be aware of it's limitations for your safety and those around you. Next time I'll buy something local with all the appropriate markings to be sure.That's my story and I'm sticking to it. Hope it helps!All the best, Just BenjaminReviewed: Brand: Hyecen Cost: $26.99 at time of review.G80 Clevis Eye Grab Hook,3/8" Heavy Duty Chain Hooks,Forged Tow Trailer Safety Hook with 6600Lbs Work Load Limit Capacity for Hauler Hitches Wrecker Truck,Clevis Grab Winch Hooks for Lifting（2pc)