Value Collection 28-3M09-6FA-1/4 Timing Belt Pulleys; Pulley Type: Hub & Flanges; Number of Teeth: 28; Outside Diameter (Decimal Inch): 1.0230; Belt Width: 9.0 mm; 9.0 in; 9.0 cm; Material: Aluminum; Pitch Diameter: 1.053 in; 1.053 mm; Face Width: 0.