This 0.5-3mm twist drill chuck set is made of copper with excellent workmanship. Copper miniature drill chuck, and drill mix to form a hand drill The collets can go with twist drill as a mini hand drll for ABS board, aluminium shet, paperboard drilling. Kindly Remind Small objects,place where children cannot touch and get and keep properly after use,avoid loss. Please wear goggles when using the drill. It is Practical , mini and easy to fix and use. Specification: Quantity: 8pcs/1set Adapter drill: 0.5MM-3.0MM Material: Copper Color:Golden Type: Drill Chuck Package Includes: 1x For Axis 1x Copper Cap 1x Allen wrench 1x 0.5mm drill collet 1x 1.0mm drill collet 1x 1.5mm drill collet 1x 2.5mm drill collet 1x 3.0mm drill collet (Retail package is NOT included Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.