IRWIN 10507593 4X AND 6X BLUE GROOVE MIXED BIT 8 PIECE SETThe Irwin 6 x Blue Groove Wood boring bit offering 6 x faster penetration than a standard flat bit. Each bit has been fully heat treated for extra durability. The Tri-flute tapered flute design gives faster chip ejection and less binding during use.Irwin 4X Blue Groove long flat bit with patented groove point and cutting edge designed to cut and not scrape the timber 4X faster. The parabolic scoop optimises control and removal of wood chips. The relief angle has been increased from 12° to 17°. The shank is 157 mm in length and 10% larger in diameter for added durability.Features:6 x Blue Groove Wood Bits
4x Blue Groove Flat Bits
Set Contains:- 6X Blue Groove Wood Bits - 3 pieces 22, 25 and 32 mm 4X Blue Groove Flat Bits - 5 pieces 12, 16, 18, 20 and 22 mm
Haven't used them yet so cannot really give a comment on them, but first appearance looks to be of good quality.
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