Heavy-Duty cast iron and steel construction. Chrome plated ball bearing roller head. Locking screws provide added safety. The roller heads are interchangeable. Roller Type V-Shaped. Weight Capacity (Lbs.) 2000. Round Stock Capacity (Min.) (In.) 1. Round Stock Capacity (Max.) (In.) 12. Height Range (In.) 23 to 38.5. Floor Area Required (In.) 16.5 x 16.5. Weight - Assembled (Lbs.) 43. Weight - Roller Head Only (Lbs.) 12.