CMT 190.506.41 Solid Carbide Up/Downcut Spiral Bit 1/2" RH DLCS 10-PkThe CMT 190. 506. 41 X10 is a Up Downcut Spiral Router Bit. Up downcut spiral bits are compression bits that cut upward and downward simultaneously for chip free faces on both sides ideal for CNC through cuts in plywood, MDF, and laminates. SPECIFICATIONS Diameter (D) 1 2" Cutting Height (I) 1 1 8" Cutting Height I1 15 32" Total Length (L) 3" Shank (S) 1 2" Number of Teeth 2 + 2 Product Type Up Downcut Spiral Router Bit Shank 1 2 inch Blade Material