High quality 6mm x 6mm hardened key steel. Used to slot into the keyway on your 30mm rear axle, to securely lock the rear hubs and sprocket drive hub onto the axle. Supplied in a longer than required length of 300mm, which can be cut to length.
300mm Length in a Square 6mm SizeSecure Locking of Hubs onto the Axle ShaftFor Both Rear Wheel and Sprocket HubsTrim down to length with a 1mm steel cutting disc in your angle grinder, keep the rest as spare.