32-Piece Lengthened 1mm-2.8mm 6 Size Diamond Drill Bits Set Compatible with Dremel Rotary Tools, for Jewelry Making, Stone, Glass, Ceramic, Gemstones, Includes 2 Collets

ZiQiDL 32-Piece Lengthened Diamond Drill Bits Set compatible with Dremel Rotary Tools, for Jewelry Making, Stone, Glass, Ceramic, Gemstones, Includes 2 Collets

• 【32PCS Complete Diamond Drill Bit Set】It includes 30 different-sized diamond drill bits (1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2 mm and 2.8 mm), with 6 of each size. Additionally, there are 2 brass chuck heads for easy compatibility and secure fixation. It is highly suitable for precision drilling and fine manual crafting.
• 【15mm Long Diamond Coated Working Area】Features an extended 15mm diamond-coated section for deeper drilling compared with standard short diamond bits. Easily handles various thicknesses of jade, glass, pebble stones, ceramics, and other hard materials.
• 【Precision Drilling for Hard Materials】Designed for drilling small clean holes in glass, jade, gemstone, pebble, ceramic, porcelain, stone, and similar hard surfaces. Suitable for jewelry making, DIY crafts, lapidary work, and professional stone processing.
• 【43mm Extended Length Design】Each drill bit has a total length of 43mm, allowing improved reach and better control when drilling thicker materials. The long design helps maintain stable positioning during precision hole making.
• 【Professional Use Recommendation】For best performance, use with high-speed rotary tools while applying light pressure and water cooling. Slow and steady drilling extends tool life and improves hole accuracy. Recommended for experienced users and professional applications.