Click or scroll to zoom Tap or pinch to zoom Edge & Face Forming Bit - Router Bits - 13mm Core Box Bit - TruaCuT by ConFit Australia Save Liquid error (snippets/product-badge line 32): Computation results in '-Infinity'% $28.82 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart A - 12.7mm B - 9.5mm Small dia. bits are called Veining bits which cut shallow grooves on board surface. 6mm wide and over are called Core Box Bits. These are used for reeding, fluting and lettering.