The Woodward steering wheel quick release features a state-of-the-art spline with a two-inch engaged length. This low profile "square" spline provides highly positive transmission of torque without the spreading effect of the common involute spline, and is the key to the hub's compact design and extremely light weight. Designed specifically to resist unintentional removal, it cannot eject itself accidentally even though only a minimal effort is required to release it. All aluminum parts are red anodized, and all steel parts are gold zinc plated. The weld-on type spline adapters have a one-inch extension to permit welding without damaging the plating on the splines. The hub is drilled and tapped with three copies of the standard US bolt pattern. Besides removing weight, the extra holes allow precise alignment of the steering wheel's centered position with respect to the 20 splines of the hub. All units are supplied with lightweight button head Torx screws, with washers for mounting steering wheels of various thicknesses. All Woodward quick releases meet SFI specification 42. 1.Pit Stop USA offers Woodward Quick Release w/ Jumbo Steel Pull Ring and Weld-On Adapter - SFI 42.1 Sticker QRS at low everyday prices. Be sure to check out all of our products from Woodward including Woodward Steering Wheel Disconnect Hubs and Woodward Steering Wheel Disconnects.