Features: Titanium coated to reduce friction and heat. High-speed steel step drill, higher quality and more durable than ordinary twist drill. These drill bits works great in making a smooth, clean and perfectly round hole. Suitable for punch holes through sheet metal, iron plate, aluminum plate, brass, wood, plastic, etc. This drill bit set includes 3 sizes(4-12mm, 4-20mm, 4-32mm), which meet your different needs perfectly.
NOTE: 1. Hand drill and bench drill can be used for these step drills. 2. Use water injection for cooling when drilling, which can effectively prolong the using life of drill bit. 3. Recommend drilling rate of 250-400 RPM. 4. You can drill sheet within 5mm with our step drills. 5. Remember that only M35 step drill is for stainless steel. Never use these HSS 4241 step drills to drill stainless steel!
Package Included: 3 * Step Drill Bit ProductSiteLaunchDate : 2018-04-23T07:00:00.000Z Size : 3/16-1-3/8" SkipOffer : 1 StreetDate : 2013-05-13T00:00:01Z Style : 3/16 In. to 1/2 In. SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Alloy Steel SurfaceRecommendation1 : Aluminum SurfaceRecommendation2 : Metal SurfaceRecommendation3 : Plastic SurfaceRecommendation4 : Wood SurfaceRecommendation5 : Copper SurfaceRecommendation6 : Iron UnitCount : 1 UnspscCode : 27111700