Install the gear lever into rotation bracket and fitted swim boards. Choose the thimble you need to pull,plug in the rotation lever,tighten the screws (Note:There are thimbles with platform, screws should not too tight). Snapping the motor into the swimming board, and move to pull the motor shaft aligned thimble. Includes 5 pins for motor shaft diameter 0.9mm*1,1.75mm*2,1.9mm*1,2.8mm*1, suitable for motors of rc helicopter, plane or . Rotates active lever as clockwise, pull out the motor gear. Colour: silver Material: iron Package Contents: 1 * Motor Pinion Gear Puller Remover Tools Set Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.