wdt_ID Category Type Picture Dia. from Dia. to Connection thread Flyer / Brochure 1 Solid drill head Type 17 7.76 15.50 brazed Catalog 2 Solid drill head Type 18 12.21 15.50 1-start connection Catalog 3 Solid drill head Type 20 14.51 36.99 1-start connection Catalog 4 Solid drill head Type 11 14.55 36.99 1-start connection Catalog 5 Solid drill head Type 70B 25.00 65.00 1-start connection Catalog 6 Solid drill head Type 12 28.50 74.99 1-start connection Catalog 8 Solid drill head Type 14 15.61 65.00 4-start connection Catalog 9 Solid drill head Type 61 15.65 36.20 4-start connection Catalog 10 Solid drill head Type 70A 25.00 65.00 4-start connection Catalog 11 Solid drill head Type 64 28.71 74.99 4-start connection Catalog