Standard spade bits burn and stall in knotty pine or wet lumber — you get a charred ring instead of a clean hole, the bit overheats, and the wood splinters at the exit. When you are boring multiple holes for electrical conduit or plumbing in rough framing, that adds up to time you did not have. This 1-inch by 6-inch Speedbor Max spade bit has a sharp face-counting score spur that cleanly cuts the hole perimeter before the bed takes the material — the result is a clean, round hole without tear-out or burning even in damp or resinous wood. The 6-inch length handles most framing and electrical boring depths without switching to a longer bit. The optimized flute design clears chips faster, reducing drag and heat buildup over repeated holes. Standard on the boring bit inventory of electrical an Stocked at Crofton Lumber and Akron Lumber.