[DETAIL] Wide Application: Quick-change Chucks Are Ideal For Light-duty Accessories Including Drill Bits, Sanding Drums, Polishing Wheels, Wire & Bristle Brushes, And Cut-off Wheels. The M7 Model Is Compatible With The Dremel And The M8 Model Is Compatible With Other Rotary Tools. Brass Collet: Made Of High-quality Brass For Wear Resistance And Durability. The Brass Collet Offers A Great Improvement In Precision And Holds Fine Bits More Firmly. It Not Only Remains Stable At High Rotational Speeds, But Also Increases Working Efficiency. Keyless Chuck: A Built-in Spring Ensures Better Attachment And Prevents Accessories From Falling Or Flying Out During Use, Which Provides Excellent Stability. The Quick-change Chuck Can Hold Various Accessories From 1/32" To 1/8" Shank Sizes. Please Measure And Compare Sizes Before Purchase. Metal Nut: Made Of Metal Material, Sturdy And Stable. The Plastic Nut On The Market Often Break During Use, But The All-metal Nut Solve This Quality Problem Very Well. They Are More Durable And Safer Than Plastic Materials. [ATTRIBUTES] - Hign-concerned Chemical: None - Origin: Mainland China - Certification: CE - Hign-concerned Chemical: None - Origin: Mainland China - Certification: CE - DIY Supplies: Woodworking - Hign-concerned Chemical: None - Model Number: B46D13AC1903134 - Origin: Mainland China - DIY Supplies: Woodworking