I seen this somewhere, it's called a Lumb-R-Grip.
It's a metal hook you can use to maximize storage space in your garage or anywhere with exposed ceiling joist or timber. The grip end attaches to the wood and the padded hook can hold up to 200lbs. When more weight is added, the hold increases. The hook can be removed by taking away the weight to release the grip.
It's a metal hook you can use to maximize storage space in your garage or anywhere with exposed ceiling joist or timber. The grip end attaches to the wood and the padded hook can hold up to 200lbs. When more weight is added, the hold increases. The hook can be removed by taking away the weight to release the grip.