Usage Tips:Replace the poor quality plastic gear with our CNC machined billet aluminium gear.This allows you to replace just the gear component that fails within the mechanism without having to buy a whole mechanism at vast expense which would just fail again. Our part is machined to fine tolerances and is a direct replacement for the and will not fail again. Our part can be fitted simply using our pictorial and video instructions and will resolve the faults noted above caused by the faulty plastic gear. Our kit comes complete with a Cobalt drill bit for separating the panels of the mechanism and stainless steel fasteners for resecuring the mechanism panels. Enabling you to lubricate the mechanism periodically to prevent any future failure. Color: silver material: metal Package Content: 1* CNC machined aluminum gear 8* stainless steel bolts, nuts and washers 1* cobalt drill bit Only the above package content, other products are not included. Note: Light shooting 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.