Plastic 36mm Diameter 3mm Thickness Rubber Band Pulley 10Pcs Black Material: Plastic; Net Weight: 20g Package Content: 10 x Rubber Band Pulley; Main Color: Black Product Name: Rubber Band Pulley; Fit Rubber Band Width: 2mm Size: 36 x 3mm/1.4" x 0.12"(D*T); Fit Shaft Dia: 2mm Country of Manufacture: CHINA; Brand: DMiotech