1. Heavy duty cast iron body and sports a full 7 inch of throat depth. 2. This bench mounted manually operated bead roller comes with the most popular sizes of forming rolls for HVAC work. 3. A material depth stop is also included to help the operator achieve the straightest lines possible. Standard accessories: Complete with six sets standard rollers for turning, wiring, crimping, burring, and ogee Beads are all part of the package. Optional accessories: Stand metalworking machines