ITEM NAME:4X(Extruder Pulley 36 Teeth Bore 5Mm Stainless Steel Drive Gear For 1.75Mm D6P5) 4X(Extruder Pulley 36 Teeth Bore 5Mm Stainless Steel Drive Gear For 1.75Mm D6P5) 4X(Teeth number:36T Outer diameter:11 mm Bore: 5mm Height:11 mm Net Weight: 5g/pcs Material: stainless steel colour:Silver Package Contents: 5 * Drive Gear).4X(Teeth number:36T. Material: stainless steel. 5 Drive Gear).