M.K.
. Morse Hole Saw, Advanced, Series: MHSA, 3-3/4 in dia, 1-15/16 in Cutting Depth, 5/6 TPI, 5/8-18 Arbor, 1/4 in dia x 3-3/32 in L Drill, M42 HSS-Co 8 Cutting Edge, Bi-Metal Body, Toothed Cutting Edge, 45 to 135 RPM, Hex Shank, 3/8 in Shank, Red, Applicable Materials: Machinable Metal, Nail Embedded Wood, Plastic, Stainless Steel Alloy and Wood.K. Morse.