Conical Milling Cutter for Metal - 32MM Cobalt Drill Bit (6-Piece Set)

Features100% brand new and high quality. Made of high-quality HSS steel. Ideal for cutting holes in a variety of materials, including steel, brass, wood, plastic, etc. Titanium coating to reduce heat. Heat treated and highly polished.Perfectly drill round holes in steel, brass, plastic, wood, etc. The double-flute design provides faster, smoother, and cleaner cuts. Each step is clearly labeled with the diameter and depth.CautionBecause the outer diameter of each step of the step drill gradually increases, the cutting resistance and corresponding linear speed will also gradually increase.Since the step drill relies entirely on the angled edge, which is only 1mm long, if the feed speed is too fast during drilling, it will easily become damaged due to abrasion of the angled edge.Please apply downward force when drilling; do not press too hard to avoid edge wear.Suitable MaterialsWorkpieces of general hardness, such as wood, plastic, PVC sheet, iron sheet, with a sheet thickness of less than 3mm.Please note that stainless steel and spring steel are not suitable.Not for hardening.(Water injection cooling during operation can effectively extend the drill bit's lifespan, especially in the case of continuous drilling.)