heavy duty engine lifting brackets are made of high strength steel,enough sturdy to make sure safe use for engine hoist.The capacity of single lift bracket is 5,500 lb Angled design engine lifting bracket bolt can be directly to the lift engines /transmissions/radiator/truck motor and other heavy parts in need be lifted,it's use with load levelers and lifting Widely use: The 7100 5,500 lb. capacity engine lifting brackets set kit can be used to lifting engines when maintain&repair engines(includes:automotive engines,tractor engines, engines), lifting transmissions,removing radiators out of trucks and lifting other heavy loads The engine lift bracket are great tools for workshops and garages,make job easier and faster,improve work efficiency Maximum load lifting capacity: 5,500 pound, lifting brackets acceptable max bolt diameter: 1/2 inch. Color: Gold Material: Steel Package Contents: 4x 7100 Engine Lifting Bracket Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.