Solid Carbide End Mill 16mm 16x52-57x110xD16D1 (Cutting diameter): 16mm D3 (Undercut diameter): 15. 5mm L2 ( Length of cut): 52mm L3 (Length of undercut): 57mm L1 (Total length): 110mm D2 (Shank diameter): 16mm Z (Number of cutting edges): 7 Helical pitch: 39 Slightly conical tool core and special helical pitch 7 specially finished cutting edges with optimized geometry Face Finish bevel for smooth workpiece surfaces For excellent surfaces and maximum dimensional accuracy 7 cutting edges for