Description
5Pcs HSS Titanium Step Drill Bit Set W Automatic Center Punch High Speed Steel. WIDELY APPLICATION: The step drill bits can be used to chamfer, bur, and drill or enlarge holes. The step drill bits can work with stainless steel sheets, aluminum alloy, plastic material, and wood. Features: FEATURES: 5pcs step drill bits enable 50 sizes - each step drill bit can drill several bore diameters. It's can work as 50pcs twist drill bits. You don't have to replace drill bit constantly for different bore sizes. TITANIUM HIGH-SPEED STEEL: classic and sturdy high-speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of the metal sheet. DOUBLE CUTTING BLADES & THREE-SIDED SHANK: Double cutting blades and X-type openings design ensure a faster and smoother cutting; 3-sided shank design prevents slip in drill chuck can cut through the wood, sheet metal, steel, and other surfaces. WIDELY APPLICATION: The step drill bits can be used to chamfer, bur, and drill or enlarge holes. The step drill bits can work with stainless steel sheets, aluminum alloy, plastic material, and wood. The protective aluminum case makes the drills not easy to dull, canvas packing will more light and easy to carry, both of them would be shipped randomly. Specification: - 1/4'' to 1 3/8'' Drill Bit: 10 Steps (1/4'', 3/8”, 1/2'', 5/8'', 3/4'', 7/8'', 1'', 1 1/8'', 1 1/4'', 1 3/8''). - 3/16'' to 7/8'' Drill Bit: 12 Steps (3/16'', 1/4'', 5/16'', 3/8'', 7/16'', 1/2'', 9/16'', 5/8'', 11/16'', 3/4'', 13/16'', 7/8''). - 1/4'' to 3/4'' Drill Bit: 9 Steps (1/4'', 5/16'', 3/8'', 7/16'', 1/2'', 9/16'', 5/8'', 11/16'', 3/4''). - 1/8'' to 1/2'' Drill Bit: 13 Steps (1/8'', 5/32'', 3/16'', 7/32'', 1/4'', 9/32'', 5/16'', 11/32'', 3/8'', 13/32'', 7/16'', 15/32'', 1/2''). - 3/16'' to 1/2'' Drill Bit: 6 Steps (3/16'', 1/4'', 5/16'', 3/8'', 7/16'', 1/2''). Advantages of HSS Step Drill Bits 1. Drills holes of various sizes without changing bits. 2. Prevents metal scurf from flying around for improved safety. 3. Smooth hole edges, perfect to drill holes for HVAC jobs.Smoother and rounder holes. 4. Minimal shocks and almost impossible to snap compared to conventional bits. 5. Double cutting blades design enables a faster and smoother cutting; 6. X-type openings design to facilitate the removal of cutting waste when drilling; 7. 3-sided shank prevents slip in drill chuck; 8. Cobalt added reduces friction and lasts longer than those which does not contain cobalt bits Notice: In case the item is defective, please inform us within 15 days of receipt, we will arrange reship or refund. Buyers have to pay for the return cost and we will pay the cost for resend. If you are unsatisfied with our item or service, please contact us before leaving any feedback. We are committed to resolve all issues in a friendly and satisfactory manner. We always reply to messages within 2 business days (off-duty at weekend).If you do not get a response from us, then please check your junk or spam mailbox.