Summit Racing SUM-917056: Engine Dolly. Steel. Black Powdercoat. Wheels Included. Chevy. Big/Small Block. Each- Summit Racing Roll-About Engine Cradles are an economical solution to store your engine. These roll-about engine cradles are made from 14 gauge square steel tubing and have a black powder coated finish. They can be disassembled for storage when not in use and include Grade 5 fasteners and 3 in.caster wheels. Max weight limit is 1.000 pounds.