Up for sale is this 1-ton Single-Sheave Hook-Mounted Block Pulley. The housing of the pulley measures 8 1/2 in. across by 6 1/2 in. high (without the hook). The wheel diameter is 7 in. and is 1 3/8 in. thick. The wheels turn nice & easy. The pulley weighs 31.2 lbs. The only writings are "L63L." These are located on the housing. On the hook is most likely a company name but I can't make it out.