SD6-5.5

• Steel (tI) + Steel (tII): 0.50–1.50 + 1.50–5.0
• Drilling Capacity (Σ max tI + tII): 6.0
• Steel (tI) + Steel (tII): 0.50–1.50 + 2×1.0–2×3.0
• Drilling Capacity (Σ max tI + tII):  7.0