Value Collection 12-3M06-6CA-3/1 Timing Belt Pulleys; Pulley Type: Hub w/One Flange; Number of Teeth: 12; Outside Diameter (Decimal Inch): 0.4210; Belt Width: 6.0 cm; 6.0 in; 6.0 mm; Material: Aluminum; Pitch Diameter: 0.451 in; 0.451 mm; Face Width: