Boring Tools DB Rough boring head 雙刃粗搪刀 ● Adjustable twin boring arm system for variety situation of rough boring. ● Reliable cartridge system provides high rigidity and efficiency. ● Step boring arm design, suitable for single bit boring, twin bit boring, and step boring. ● Side division easy to adjust tool extended without pre-setter. ● Boring diameter from 25mm to 204mm. Boring Range L C Weight Order No. LBK No. Insert Boring ØD (mm) (mm) (mm) (kg) IDB25-33-C IDB2 25 ~ 33 45 24 CCMT060204 0.15 IDB32-42-C CCMT060204 IDB3 32 ~ 42 55 31 0.3 IDB32-42-T TCMT110204 IDB40-55-C CCMT09T304 IDB40-55-T IDB4 40 ~ 55 65 39 TCMT16T304 0.5 IDB40-55-S SCMT09T304 IDB52-70-C CCMT09T304 IDB52-70-T IDB5 52 ~ 70 75 50 TCMT16T304 1.0 IDB52-70-S SCMT09T304 IDB68-92-C CCMT120408 IDB68-92-T 68 ~ 92 85 64 TCMT16T304 2.0 IDB6 IDB68-92-S SCMT09T304 IDB90-122-C 90 ~ 122 100 80 CCMT120408 2.9 IDB120-164-C 120 ~ 164 100 100 CCMT120408 3.8 IDB20 IDB160-204-C 160 ~ 204 130 130 CCMT120408 4.8 C093