1. The extended adapter set includes power tool covers in sizes: 3/4 inch, 1 inch, 1 1/4 inch, and 1 1/2 inch (three pieces). 2. Features a quick click system for easy connection to the exhaust ports of all major hand and stationary power tool brands. The collar with clip ring and bayonet fittings, along with a 1', 1 1/4', or 1' soft TPE fitting, securely holds exhaust connections—either inside or outside the hose—as required by the power tool design. Switching between ends takes just seconds and provides a smooth 360 degree swivel connection to prevent hose kinking or restricting tool movement. 3. Compatible with most major power tool and work cover brands, including Skil, Bosch, Ryobi, Makita, DeWalt, Festool, Fein, Cobalt, Porter Cable, Hitachi, and Milwaukee Electric. 4. Works with the following Cen Tec adapters and hoses: 94511, 94522, 94434, 95193, 95204, 95215. The adapter kit is only compatible with 1 1/4' threaded hoses and not with standard blow mold hoses included with most vacuums. The soft TPE fitting adapts to the shape of the power tool's exhaust port for a secure fit.