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 collets Package Included: 5 x Quick Change Keyless Chucks 【Replacement for Dremel 4486:】 Only suitable for Dremel rotary tool models 275, 285, 398; Also suitable for models 750, 770 and 781 【Compatible with:】 Use with rotary tool models : 4000, 400, 3000, 398, 300, 285, 275, 200, 100, 8220, 8200, 800, 780, 770, 7700, 750 【Size:】 Clamping Range: 1/32 - 1/8 inch Maximum RPM: 35.000 1/min Length: 23.5mm Diameter: 14mm Color: Black 【Easy To Use:】 Easy and quick to change accessories replacement on multi tool without changing collets 【Specifications:】 Quick change chucks Only fit for Dremel rotary tools, NOT fit for other rotary tools It makes it easy for you to work, change the chuck diameter, and make a durable product Ideal for light-duty accessories including drill bits, sanding drums, polishing wheels, wire & bristle brushes, and cut-off wheels 【Package Included:】 5 x Quick Change Keyless Chucks