6Pcs Titanium Coated Drill Bit Set,Included 3 Sizes of Step Drill Bits and 3 Sizes of Twist Drill Bits for Hole Drilling Metalworking Woodworking,with Plastic Storage Box

6 Pcs Drill Bit Set: Including 3 pcs step drill bits (one 5-Step Drill Bit from 4mm to 12mm, one 9-Step Drill Bit from 4mm to 20mm and one 15-Step Drill Bit from 4mm to 32mm), 3 pcs twist drill bits (3mm, 6mm, 8mm) Sharp & Wear-Resistant: These drill bits are made of high-speed steel material with titanium coating,the drill bit has sharp edges, making it more effortless and faster to use. The titanium coating can prevent drill bit corrosion and rust, reduce friction, and its service life is 2 times that of standard impact drill bits Twist Drill Bit Efficiently: Quickly decreases friction and heat for a faster and cooler drilling performance. The sharp serrations belt design can continue to drill horizontally after drilling. 135° Split Point with straight shank prevents walking and makes drilling precise and faster Wide Usage: Perfect step drill bits suitable for drill holes in various material. Within 3mm / 0.12 inch (Iron Plate, Copper Plate, Aluminum Plate), within 5mm/0.2 inch (Wood, PVC sheet, Insulation Boards). Twist drill bit suitable for pulling groove, boring or cutting 1mm-2mm of thin wood, solid wood, MDF, plastic board, aluminum, thin iron sheet, aluminum alloy. Note: not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls etc Orderly Storage: Along with a Plastic Case to keep drill bits organized while not in use Warm Note: Hand electric drill, lithium electric drill and bench electric drill are recommended. High speed reaming pagoda sawtooth set can't use match with the impact drill bit