Specifications: Item Type: Brass Material: Brass Model: 4309-0014-0024 Center Aperture: Approx. 14mm/0.6in Number of Teeth: 24 Module: 1.5 Purpose: Motor Drive Gear Voltage Parameter How to Use You can use 3309 series high clamps and 3310 series high speed and high load shaft clamps to install and fix this gear. The shaft clamp can transmit the torques generated by the gear motor to the output shaft to provide power for the robot. Among them, the high load shaft clamp is the best choice, because the clamping length of the high?load shaft clamp is much longer than the length of other shaft clamps, reaching 20mm. This greatly increases the contact between more shafts and the surface of the center hole, greatly increases the clamping force and the pressing area, and provides greater supporting force to resist heavy radial loads. And there is a clamping screw on each side. The balanced double screw setting will produce a balanced and firm clamping force on the shaft. To ensure that the rotating components fixed on the shaft will not move, slip or loosen. Package List 1 x Brass