About this item

1、[Rugged And Durable] Made of industrial grade high speed steel with nickel plated body to prevent corrosion, so you can use it for a long time. 2、[Fine Workmanship] Fine processing, super wear resistant and incisive drill, it is very convenient for your use and polishing hard thing. 3、[Easy To Use] Each hole is smooth and precise surface treatment, the top of the hole is very thick, and the shear strength is good. 4、[Application] It is used for drilling hard surfaces such as glass, wood, ceramic tile bottles, brick jars, ceramics, slate, granite, etc. 5、[Small And Practical] The 6‑50mm diamond glass hole opener is the perfect accessory for drill bits, and enhanced machine performance. Item Type: Diamond Drill Bit Material: High Speed Steel Weight: Approx. 328g / 11.6oz Product Specifications: 6mm / 0.24in 8mm / 0.31in 10mm / 0.39in 12mm / 0.47in 14mm / 0.55in 16mm / 0.63in 18mm / 0.71in 20mm / 0.79in 22mm / 0.87in 25mm / 0.98in 26mm / 1.02in 28mm / 1.10in 30mm / 1.18in 40mm / 1.57in 50mm / 1.97in Scope of Application: Glass, ceramics, marble openings, etc 15 x Diamond Drill Bit