Feature●?Accepts accessory rotary bits with 1/32-inch(0.8mm) to 1/8-inch(3.2mm) shanks●?Only suitable for Dremel rotary tool models 275, 285, 398; Also suitable for models 750, 770 and 781●?Use with rotary tool models 4000, 400, 3000, 398, 300, 285, 275, 200, 100, 8220, 8200, 800, 780, 770, 7700, 750●?Quick change chucks Only fit for Dremel rotary tools, NOT fit for other rotary tools●?Easy and quick to change accessories replacement on Dremel multi tool without changing colletsDescription