Product Description
- Wide assortment for many drilling and fastening applications
- Made from high-grade S2 tool steel
- 8 black-oxide 135-degree split-point twist drill bits
- 5 Speedbor BlueGroove wood boring bits
- 1-inch fastener drive insert bits with magnetic screw guide
The Irwin Tools 4935569 drilling and fastener drive 56-piece kit includes 5 Speedbor BlueGroove wood boring bits, 8 black-oxide metal twist drill bits, 42 fastener drive insert bits, and a magnetic screw guide bit holder. This kit will allow most contractors and DIYers to take care of most common fastening and drilling applications. The Speedbor set includes 3/8-inch, 1/2-inch, 5/8-inch, 3/4-inch, and 1-inch diameter bits that feature Irwin’s patented BlueGroove cutting edge, which makes for faster chip removal. The Speedbor bits are 4 times faster than traditional spade bits and have double-cutting spurs that scribe out the outside of the hole, reducing breakout. The quick-change shanks fit all standard 1/4-inch quick change chucks. The twist drill set includes 8 black-oxide bits from 1/16-inch to 1/4-inch. The black-oxide finish provides corrosion resistance and the heavy-duty web construction gives the bit strength and durability. The bits feature a 135-degree split point that begins drilling immediately, minimizing bit “walk”. These bits are ideal for drilling through most materials including metal, wood, and plastic. The fastener drive set includes 12 Phillips-head insert bits, 12 square-drive insert bits, and 12 slotted insert bits, along with a magnetic bit holder. These bits are made from high-grade S2 tool steel and are milled to a precise fit.