ITEM NAME:1.2mm MIG Roller Steel Precision Welder Wire Feed Drive Roller Roll Parts Description: Welder wire feed drive roller roll parts. High and precision and strength. Durable design and exquisite workmanship. Easy to install. Specification: Material: bearing steel Inner Diameter: 22mm/0.87inch Outter Diameter: 30mm/1.2inch Chickness: 10mm/0.4inch Package Includes: 1 Piece Welder Wire Feed Drive Roller Note: Please allow 1-3mm errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same..Welder wire feed drive roller roll parts. 1 Piece Welder Wire Feed Drive Roller. High and precision and strength. Material: bearing steel. Easy to install.