Irwin Speedbor Multiple in. Dia. x 6 L Carbon Steel Spade Bit Set 1/4 in. Hex Shank 5 pc.

Blue groove point and cutting edge for faster chip removal double cutting spurs scribe the outside of the hole reducing breakout grooved Hex shank prevents slipping in drill chuck or bit extension 10 percent larger shank for added durability set includes 1/2 inch, 3/4 inch, 5/8 inch, 3/8 inch and 1 inch spade bits 5 count.
Blue-groove point and cutting edge for faster chip removal
Double cutting spurs scribe the outside of the hole reducing breakout
Grooved hex shank prevents slipping in drill chuck or bit extension
10 percent larger shank for added durability
Set includes: 1/2 in., 3/4 in., 5/8 in., 3/8 in. and 1 in. spade bits
5 count