Williamson Crimping Tools. Start making professional quality crimps the right way with this complete set. Start off with the best new way to make professional crimps: The Williamson Crimping Tool. Add to that 485 pieces including: Double Copper Sleeves, Aluminum Sleeves with both small and large protection tubes. Inside the lid is a quick and easy reference chart to help you match you line/cable weight to the proper sleeve. Complete instructions are also included for making a double knot or tubed loop rig. All this packed into 3650 style utility box for convenient storage on a boat or dockside.