uxcell 10pcs Plastic 22mm Diameter 9mm Thick Rubber Band Belt Pulley Wheel Size: Pulley: 22 x 9mm/0.87" x 0.35" (D*T); Country of Manufacture: CHINA Brand: DMiotech; Material: Plastic,Brass, Metal Net Weight: 92g; Package Content: 10 x Belt Pulley, 10 x Screw Bolts Main Color: White,Silver Tone; Fit Belt Width: 3mm/0.12" Screw Thread Dia.: 3mm/0.12"