[QUICK CHANGE KEYLESS CHUCK] - Suitable for 1/32 inch to 1/8 inch shank sizes. Adapter compatible with 4485, 4486, 100, 200, 275, 285, 300, 395, 398, 400, 750, 770, 780, 800, 3000, 4000, and 8200 models. Not compatible with discontinued 1, 2, 1 series or 8050-N/18, 260, 270, and 280 models. [High Quality Material] - Made of metal material, wear-resistant and more durable than plastic. Designed to work with brass chuck for improved accuracy and adaptability. [10 SIZES OF BRASS 4485 CHUCKS] - Includes 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm, 2.4mm, 3mm, and 3.2mm. Please verify the sizes needed before purchase. [WHAT YOU GET] - 1 alloy replacement keyless chuck, 1 brass replacement chuck nut, and 10 brass 4485 chucks. Color: Gold + Black Material: Metal Package Contents: 1 x alloy replacement keyless collet 1 x brass replacement collet nut 10 x brass 4485 collets Only the above package content is included; other items are not part of this package. Note: Due to lighting and display differences, the actual color may vary slightly from the image. Measurement may vary by +/- 1-3 cm.