General description Mini keyless chucks designed for quick and easy bit changes, compatible with various Dremel rotary tools. This set includes 4 pieces, making it a versatile addition to your DIY toolkit. Technical specifications Total size: 24 x 14 mm Chuck range: 0.4 - 3.2 mm Weight: 0.1 kg Material: Alloy Overall length: 23.4 mm Tooth width: 0.75 mm Diameter: 1.4 cm Compatibility and accessories Compatible with Dremel models: 4000, 400, 3000, 398, 395, 300, 285, 275, 200, 100, 8220, 8200, 800, 780, 770, 7700, 750 Note: Not compatible with model 8050-N/18 due to a short machine shaft Usage Allows for quick and easy changes of attachments Ideal for various DIY and home improvement projects Other information Made of all-metal construction for durability Black rust oxide coating extends lifespan Packaging includes: 4 x Keyless Chucks