USK Gear No 2 - Metal Gear Utilised in the USK Inc Gear Motors/ Gearboxes, made in Korea Part Number: 1709-64-15 SKU: 3709002015 Outer Diameter (Width): 49mm Inner Diameter: 17mm Outer Metal Teeth (Straight): 64 Inner Metal Teeth (Straight): 15 Shaft Height: 24.5mm