Keyless Chuck for, 2 pcs Multifunctional Adapter Chucks Mini Keyless Drill for Grinder Tool 0.4-3.2mm,

Dimensions: Overall dimensions of 24 x 14 mm, with a clamping range of 0.4 to 3.2 mm. Rust-resistant and extremely durable: This flexible chuck adapter is made entirely of metal and is exceptionally durable thanks to its high-temperature heat treatment. The black oxide layer on the surface also extends its lifespan. Easy to use: Drill bits can be changed quickly and easily. There's no need to change the chuck to switch to a different diameter. Wide Compatibility: Compatible with original DREMEL models (9/32-40 thread, 6.2 mm inner diameter): 4000, 400, 3000, 398, 395, 300, 285, 275, 200, 100, 8200, 800, 780, 770, 7700, and 750. Note: Model 8050-N/18 is not compatible. The thread is compatible, but the machine spindle is too short. Technical Specifications: Weight: 0.1 kg; Material: Alloy; Category: Chuck; Overall Length: 23.4 mm; Tooth Width: 0.75 mm; Clamping Range (tooth pitch): 0.4-3.2 mm; Clamping Range: 0.4-3.4 mm; Length: 2.1 cm; Diameter: 1.4 cm; Compatible with the following rotary tools: 4000, 400, 3000, 398, 395, 300, 285, 275, 200, 100, 8220, 8200, 800, 780, 770, 7700, 750 (Note: Please check that your Dremel rotary tool is listed.) Package contents: 2 keyless chucks