CRL Roller Blocks were developed to aid in the safe handling of large and/or heavy glass panels. They are made from extremely strong, high-density polyethylene so they will not chip or scratch the glass. Each of these blocks has a cushioned 90 degree inside corner on which to rest the glass while rotating or maneuvering it into position. Rubber pads placed inside and outside prevent slippage and provide traction on while rotating or maneuvering into a vertical position. When turned over and rested across each opposing edge, they serve as a resting block to keep glass edges off of the floor. The wide pocket accepts thick glass, insulating glass, and doors with patch fittings. Maximum weight capacity is 400 lbs. (181 kg) per Roller Block.