For assembly, maintenance, machining or general industrial operations, HPC 500 series end truck kits offer a medium duty, push end truck design that can be assembled for either top running or underhung cranes. The HPC505 is set of 1/2 ton (1,000 pound) capacity end trucks for building Class B Push crane systems. This item Ships via freight and does not qualify for free freight, call 800-509-6131 for a freight quote or use your carrier of choice.