Rodman's Tungsten Carbide Hole Cutters will cut deeper than 99% of what's on the market today. Instead of your standard 5/16" cutting depth, ours will go through 1" thick material. The precision spring loaded centering drill will pop your slug out the moment your cut is complete. You get a surgical cut with no deburring necessary, on even stock. The tungsten carbide teeth are electro-welded, allowing the user multiple holes without compromise. We offer individual sizes or a complete set including: 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8" & 1-1/2".