Uxcell a15071800ux0395 XL20 Type 10mm Belt Width 12mm Bore 20 Teeth Synchronous Timing Pulley, Carbon Steel/Rubber Size: 36 x 25mm/1.4" x 1"(D*H); Country of Manufacture: CHINA; Brand: Assisi; Material: Aluminum Net weight: 44G; package content: 1 x timing pulley; model: Xl20 Main color: silver tone; product name: timing pulley; pitch: 5.08Mm/1/5 inch