Check the listing for details. 2PCS Universal Torque Arm Conversion Kit, Electric Bicycle Universal Torque Arm. Color: Silver, Condition: New. Listed at 2.23 USD. 2PCS Universal Torque Arm Conversion Kit, Electric Bicycle Universal Torque Arm Application This universal torque arm conversion kit can be mounted inside or outside the frame/fork of electric bicycles. It is suitable for normal motor shafts, except for special shafts (motor shaft size not exceeding 0.55 inches). It is suitable for all ordinary motor shafts (except for special shafts), so it has high adaptability. It can effectively prevent the motor from loosening from the fork (front) or frame (rear), making your ride safer. Specification Material: Iron Color: Silver Process: Galvanized Mounting Position: Inside or Outside the Frame/Fork Assembly Required: Yes Gross Weight: 0.15 kg/ 0.33 lbs Package Size: 15*8*2 cm/5.9*3.15 in Package Included 2 * Universal Torque Arm Conversion Kits.