The Foam Clamp is designed to handle large blocks of foam rubber, insulation or other light weight volume material. It is designed for superior visibility and made of strong tubular steel. It is available in various capacities in either a class II or class III mounting. Arm height range from 16″ to 23.5″ and arm length ranges from 59″ to 98″. They also feature an arm opening ranges from 17″ to 124″.