描述
- Straight shank design is more suitable for many electric drills and drilling machines
- Diamond coated on sharp and twisted flute,will make the drilling be more easy and effortless.
- Suitable for glass, marble, tile ,jade,agate or rock.
- Add some water when drill a hole for better processing
Material: Diamond Coated HSS / High Speed Steel Diameter: 1mm Length: 28mm Quantity: 5pcs NOTE: Do not used more than 1KG force to press down the needle, because the rod is relatively thin,so if you use too much force,the needle will break. Package Included: 5x HSS Twist Drill
