【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% . 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