Features 1、Suitable for drilling complicated materials and can choose a higher cutting speed 2、Multi‑layer edge geometry improves chip removal performance and keeps cutting resistance small 3、Selected high‑performance alloy blades for steel plate drills, effectively reducing chipping and maintaining good wear resistance 4、Hole opener come with stable structure, excellent performance and long service life 5、Using advanced technology, possess smooth surface, which will not hurt your hands in work Specification Item Type: Hole Opener Material: TCT Specification: Hole Diameter x Blade Length: Approx. 13 x 35mm / 0.5 x 1.4in 17 x 35mm / 0.7 x 1.4in 14 x 35mm / 0.6 x 1.4in 16 x 35mm / 0.6 x 1.4in Package List 1 x Hole Opener