Choose from top trade brands. Gyros offer a full line of drill bits and sets. R 45 00 Bosch 5X150X210MM Sds Plus-3 . ... letter size and metric drill bits up to two inches in diameter. The ring color represents the color of the depth setting ring found on 1/8" shank drill bits (with rings @ 0.800"). Delivery 7 days a week. Your email address will not be published. { 4 interest free payments of $ 22.50. | Contact, Home Gyros offer a full line of drill bits and sets. Drill Bit Diameter Chart with Standard Depth Ring Colors The chart below lists the diameters of commonly available cutters. Lastly, the recommended tap drill size is provided for each standard tap size. N – 0.1 + 0.08 mm From 1 through 2.95mm, using N from 10 through 29, we get: 1.