Next, use a #80 drill bit to drill out the starter dimples on top of the plow. I used a #85 bit (.011") purchased in a 20-piece assortment set from Harbor Freight Tools. If you cannot get a #85 bit, the #80 will work just fine.
20 PC. SOLID CARBIDE MICRO BITS, VARIOUS SIZES 0.032" TO 0.128"
50 PC. SOLID CARBIDE MICRO BIT GRAB BAG