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Irwin Industrial Tools 87950 Speebor Blue Groove Spade Bit Set, 3-Piece - -. Speedbor2000 。 This product is highly durable 。 This product is manufactured in China. 。 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-Percent larger shank for added durability 。 Grooved hex shank prevents slipping in drill chuck or bit extension 。 Fits all standard quick change chucks 。Product DescriptionIrwin Industrial Tools 87950 3-Piece Set Speebor Blue Groove . For Fast, Rough Or Clean And Exact Holes, Irwin'S Extensive Line Of Woodboring Provide The User With The Best Available Tools For Each Application In Achieving Their Wood Drilling Needs. 1/4", 3/4", 1"。From the ManufacturerIrwin Industrial Tools 87950 3-Piece Set Speebor Blue Groove . For fast, rough or clean and exact holes, Irwin's extensive line of woodboring drill bits provide the user with the best available tools for each application in achieving their wood drilling needs.。