Diablo, 21116, Carbide Tipped Hole Saw, Cuts Both Wood Metal, Use On Wood, Nail Embedded Wood, Plastic, Aluminum, Metal, Cast Iron Stainless Steel, Delivers Longer Cutting Life Than BiMetal For Faster Cutting Performance Increased Productivity, 238 Cutting Depth For 40 Percent Deeper Holes In Single Pass Increased Productivity, Variable Tooth Design For Faster Cuts, Snap Lock Plus Mandrel System For Quick Easy Changes With No Down Time, Includes Mandrel, Pilot Bit, 58 Threaded Adapter Fits Diameters 114 To 6 12 Threaded Adapter Fits Diameters 916 To 31, One Size Fits All Mandrel Fits All Diablo Holes Saws In The Carbide BiMetal Range, From 58 To 6 Diameter, ToolFree Plug Ejection For Fast Material Removal