Use a hand drill (pin vise). https://www.google.com/search?hl=en......0...1ac.2.64.img..0.1.121....0.rf8QIJxmil8 The bit was a numbered bit in the mid 40's or there about. I used a caliper on the snap-in pins and picked a bit to match the size. https://www.harborfreight.com/60-pc-titanium-high-speed-steel-numbered-drill-bit-set-61690.html
