DEEP DRILLING - BTA SYSTEM USER GUIDE Grade of Brazed Heads DSD-E0 DSD-E2 DSD-E0 (MBU style) STS DSD-E2 (BTU 2tip style) STS Ø8 -14.79 mm (Ø.315– .582”) Ø12.60 ~ 20.00 mm (Ø.496” ~ .787”) ISO Wear resistance Shock resistance ISO Wear resistance Shock resistance 10 20 30 40 10 20 30 40 P P PZ PZT M M KZ PZN K K N N S KZ S PZT DSD-E1 DSD-E3 DSD-E1 (UTE style) STS DSD-E3 (BTU style) STS DDD-E3 (ETU style) STS Ø12.60 ~ 20.00 mm (Ø.496” ~ .787”) Ø15.60 ~ 65.00mm Ø18.40 ~ 65.00mm (Ø.615” ~ 2.559”) (Ø.725” ~ 2.559”) ISO Wear resistance Shock resistance ISO Wear resistance Shock resistance 10 20 30 40 10 20 30 40 P PZ P PZT PZX2T M KZ M PZX2T K PZN K N KZ N S KZK S KZK * indicates the first recommendation 228 ISCAR * * *