ITEM NAME:7Pieces 0.5mm-3mm Small Electric Drill Bit Collet Micro Twist Drill Chuck Set Description: Durable and practical Compatible with most of rotary tools used in hardware,hobby,home,etc Suitable for installation inside diameter of less than 3.0mm drill,electric grinding,hanging mill,hose above Suitable for use with sheet iron, aluminum, copper, plastic etc. Material: Brass Adapter drill: Approx. 0.5-3.0mm/ 0.03-0.13inch Package Includes: 1 Piece Axis Copper Cap 1 Piece Allen wrench 1 Piece 0.5mm drill collet 1 Piece 1.0mm drill collet 1 Piece 1.5mm drill collet 1 Piece 2.5mm drill collet 1 Piece 3.0mm drill collet Note: 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. SKU: DMO0003775453016525.1 Piece 0.5mm drill collet. 1 Piece 1.0mm drill collet. 1 Piece 1.5mm drill collet. 1 Piece 2.5mm drill collet. 1 Piece 3.0mm drill collet. 1 Piece Allen wrench. Adapter drill: Approx. Due to the light and screen setting difference, the item's color may be slightly different from the pictures.