Whirlruss Bargains has this 1 Lb+ lot of Solid Carbide CNC PCB Engraving V-Bits for Watchmaker and Jewelry - Large assortment 1/8", 3/16" and 1/4" shanks - Multiple geometries - 68 total bits - See images for dimensions and details - Fast replies to questions and comments - $69.99 with fast free domestic USA S&H!