The improved SPEEDBOR Spade Bits now last 2X Longer and cut 2X Faster. Next-generation SPEEDBOR Spade Bits feature a chamfered cutting edge for durability in cutting wood and optimized point tip that is wider and longer than previous IRWIN spade bits to minimize splintering and control speed. Patented Blue-Groove cutting edge allows for a large cutting area for aggressive removal of wood chips and fast drilling.