Holemaking

2-1/8 in 1 2-3/4 in 1 2-5/8 in 1 3 in 1 3-1/2 in 1 3-1/4 in 1 3-3/4 in 1 3-5/8 in 1 3/4 in 1 4 in 1 4-1/2 in 1 4-1/4 in 1 4-1/8 in 1 4-3/4 in 1 7/8 in 1

210 r/min (Mild Steel), 105 r/min (Stainless Steel), 140 r/min (Cast Iron), 315 r/min (Aluminum) 1 230 r/min (Mild Steel), 115 r/min (Stainless Steel), 150 r/min (Cast Iron), 345 r/min (Aluminum) 1 250 r/min (Mild Steel), 125 r/min (Stainless Steel), 165 r/min (Cast Iron), 375 r/min (Aluminum) 1 275 r/min (Mild Steel), 140 r/min (Stainless Steel), 180 r/min (Cast Iron), 410 r/min (Aluminum) 1 300 r/min (Mild Steel), 150 r/min (Stainless Steel), 200 r/min (Cast Iron), 450 r/min (Aluminum) 1 350 r/min (Mild Steel), 175 r/min (Stainless Steel), 235 r/min (Cast Iron), 525 r/min (Aluminum) 1 390 r/min (Mild Steel), 195 r/min (Stainless Steel), 260 r/min (Cast Iron), 585 r/min (Aluminum) 1 460 r/min (Mild Steel), 230 r/min (Stainless Steel), 300 r/min (Cast Iron), 690 r/min (Aluminum) 1 70 r/min (Mild Steel), 35 r/min (Stainless Steel), 45 r/min (Cast Iron), 95 r/min (Aluminum) 1 75 r/min (Mild Steel), 35 r/min (Stainless Steel), 50 r/min (Cast Iron), 105 r/min (Aluminum) 1 85 r/min (Mild Steel), 40 r/min (Stainless Steel), 55 r/min (Cast Iron), 130 r/min (Aluminum) 1 90 r/min (Mild Steel), 45 r/min (Stainless Steel), 60 r/min (Cast Iron), 135 r/min (Aluminum) 1 95 r/min (Mild Steel), 45 r/min (Stainless Steel), 60 r/min (Cast Iron), 140 r/min (Aluminum) 1 95 r/min (Mild Steel), 45 r/min (Stainless Steel), 65 r/min (Cast Iron), 145 r/min (Aluminum) 1