Install the 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 x 1,1.75mm x 2,1.9mm x 1,2.8mm x 1, suitable for motors of rc helicopter, plane or servo.Rotates active lever as clockwise, pull out the motor .Colour: silverMaterial: ironPackage Contents:2 x Motor Pinion Puller Remover Tools SetOnly the above package content, other products are not included.Note: Light reflection 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.