mine Air Belt Sander Option Narrow Belter A-Arm Pulley Width 3mm NR111-P04A 1 piece

Catalog number: NR111-P04A Features: ● Replacement arm for Narrow Belter. ● By replacing the arm, a belt of 3 inches, 4 mm width, and 330 mm circumference is used. ● By replacing the arm, a belt of 18 inches, 20 mm width, and 330 mm circumference is used. ● By replacing the arm, a belt of 3 mm to 6 mm width and 330 mm circumference is used. ● By replacing the arm, a belt of 10 inches, 12 mm width, and 330 mm circumference is used. Applications: ● Polishing and grinding work for aluminum, stainless steel, iron, and other items. Specifications: ● Product name: A-arm ● Compatible models: NR-111-S/NR-112/NR-11E ● Wheel diameter (mm): 25 ● Wheel width (mm): 3 ● Pulley width (mm): 3 ● Pulley diameter (mm): 25 ● Belt width: 3 to 4 mm x circumference 330 mm ● For use with Narrow Belter 111S and 11E. Material/Finish: Iron, Urethane rubber