7/16 Diameter 6 Shank Length 1/4 Shank Size Blue-Groove point and cutting edge for faster chip removal - 4x faster than standard spade bits Double cutting spurs scribe the outside of the hole reducing breakout 10% larger shank for added durability Grooved hex shank prevents slipping in drill chuck or bit extension Fits all standard quick change chucks - 7/16 Irwin Speedbor Spade Bit///brand_for_product_detail=Irwin,close_out=No,companydescription=Irwin - Imported,condition=New,condition_google=new,cost=1.880000,countrymade=Imported,featured=0,identifier_exists=0,instock=in stock,listprice=2.60,madeinusa=0,manufacture_country=Imported / Other,sellprice=2.60,square_product_image=https://square-production.s3.amazonaws.com/files/3332d66e845e57120dff19cede5773415e615221/original.jpeg,store_price=2.600000,url_path=7-16-irwin-speedbor-spade-bit
