Four Spiral Flute M35 Cobalt Step Drill Bit Set 3/16" - 7/8"(12 Sizes),Impact Ready Four Flute Step Drill Bit,1/4" Hex Shank Step Bits for Metal, Stainless Steel, Aluminum, Wood, Plastic

PANOVOS FOUR SPIRAL FLUTE STEP DRILL BIT These Double-Fluted Step Drill Bits providefaster cutting and drilling than singlo flutobits.The easy-to-read step markings andtargets save time when drilling holes A Tool Box NecessityHigh Speed Steel Durability Two flutes on this Step Drill Bitcut faster and keep bit coolerFast-starting,non-walking drill tip Thick 1/4" hex Shank won'tround out in the drill chuck fora more positive grip

• 【M35 Cobalt Superhard High Speed Steel】: ISI M35/1.3243/SKH55/M35 steel is a kind of high speed steel containing cobalt, which has the characteristics of high wear resistance, high pressure resistance and sintering resistance.
• 【M35 step drill compatibility 】： step drills can quickly and smoothly drill holes of different diameters, such as stainless steel, aluminum, wood, plastic board (the board must be thinner than the height of the step drill)
• 【12 Sizes :Including】the bit contains sizes ranging from 3/16" to 7/8". Commonly used sizes are 3/16”, 1/4”, 5/16”, 3/8”, 1/2”, 9/16”, 5/8”, 11/16”, 13/16”, 7/8”, total 12 sizes
• 【M35 four spiral groove】: step drill four cutting blade design. Faster, smoother cutting and easier separation of sawdust.
• 【extra-long warranty period】：if you have any questions about the product, please contact us and we will answer you within 12 hours. If the hexagonal handle breaks, refund or replace for 100% .