M35 Cobalt Containing Hexagonal Spiral Step Drill Stainless Steel Tapping 4-20mm Pagoda Drill 1PC Cutting Tool Drilling Bit Tool

Label: Yes Manufacture Country: China

Model Number : step drill 4-20mm DIY Supplies : Woodworking Material : High Speed Steel Type : Core Drill Bit Use : Metal Drilling Length : 76mm Product Information Features: M35 cobalt containing ladder drill (HSS Co) is mainly used for drilling wooden boards, aluminum plates, thin steel plates, etc., meeting the tasks that many customers cannot complete with ordinary HSS4241 ladder drills. M35 ladder drill is used for drilling stainless steel plates. The following points need to be noted: When drilling stainless steel holes, hand drills and table drills can be used. Hand drills can be used to drill plates within 1mm, and bench drills can be used to drill plates between 2-3mm. When drilling stainless steel, the speed should not be too fast, only a few hundred revolutions is enough. It is best to use water injection or cutting fluid cooling during the machining process, which can effectively extend the service life of the drill bit. Specifications: 4-20mm hexagonal shank spiral groove Packaging includes: 4-20mm hexagonal handle spiral groove * 1 Precautions: 1. Manual measurement, please allow an error of 1-3mm. Thank you. 2. Due to differences between different displays, images may not reflect the actual color of the item. We guarantee that the style is the same as shown in the picture.