1. It accepts all accessory bits with 1/32 to 1/8 inch shanks.
2. It allows you quickly and easily change accessory on rotary tool without changing collets, save time and highly improve your work efficiency.
3. Not only suitable for rotary tool models 275, 285, 398; Also suitable for models 750, 770 and 781
4. Widely used on rotary tool models 4000, 400, 3000, 398, 300, 285, 275, 200, 100, 8220, 8200, 800, 780, 770, 7700, 750

Specifications
Maximum RPM: 35.000 1/min
Length: 23.5mm
Diameter: 14mm
Colour:black
Material:Metal

Package Contents:
4 * Quick Change Keyless Chucks