Specifications: Material: Aluminum Teeth: 15TBore: 5mm / 0.2-inchBelt Width: mm10mm / 0.39-inch Features: Designed with double flange, synchronizing shaft rotation. Extremely convenient for high-speed drives where you need to improve your wrap. - Belt peripheral capacity Widely used in milling machine, CNC engine lathe, gear shaper, hobby machine, drill machine, or other mechanical transmission Fits timing belts with 10mm width Package Includes: 1 x MXL 5mm Bore Timing Belt Pulley