General description 4X Motor Pinion Gear Puller Remover Tools Set is designed for use with RC helicopter parts, made from durable aluminum alloy. This set includes various pins suitable for mini motors used in helicopters, airplanes, or RC servos. Technical specifications Material: Aluminum Alloy Color: Silver Included Pins: 0.9mm x 1, 1.75mm x 2, 1.9mm x 1, 2.8mm x 1 Measurement allowed error: +/- 1-3 cm Installation Choose the appropriate pull-out cartridge and plug in the rotation lever. Tighten the screws (do not overtighten). Install the gear lever into the rotation bracket and mount the swimming boards. Snap the motor into the swimming board and pull to align the motor shaft. Turn the active lever clockwise to remove the motor. Usage Designed for removing motor pinion gears from mini motors in RC helicopters, airplanes, and servos. Other information Package Content: 4 x Gear Pinion Puller Tool Set (motor not included). Note: Light shooting and different displays may cause the