Carbon Fiber Tailhook Adapter Kit includes everything you need to attach a Tailhook Mod1 Arm Brace to your Crazy Ivan Chassis (Does not include the Tailhook Brace). Includes a Nylon12 Collar for the Tailhook Brace, a Chassis Connection Sleeve (6061T6 Aluminum), Carbon Fiber Tube (19.5″ long), and Nylon12 end plug. These Adapters fits all current Crazy Ivan Chassis and those sold since 1/1/2020, but do not fit other chassis on the market or ARs. As an option you can add a Foam Arm Pad. The Foam Pads are smooth-skin NPVC, are 6″ long, and come in two thicknesses (0.265 and 0.450). The tubes are available in black, camo, and a variety of colors. The tube comes uncut so it can be custom cut to any Length of Pull (as measured from trigger to butt plate). For reference, ATF guidance is that Arm Braces should have a LOP less than 13.5 inches, or they may be considered a stock. When ordering, please select Color and if you want it cut. Please enter Length of Pull if cut is selected. The tubing can be easily cut with a fine-tooth hacksaw, bandsaw, or similar. Detailed instructions are included.