KAISER BIG BOREMATIC BM 7-150 is a Boring head, designed for precision, high accuracy and reliability. Working capacities: Diameter 53 - 70 mm; Taper in spindle: BT 50. Technical specifications available: spindle taper BT 50 and diameter range 53–70 mm. Enables achieving tight tolerances and is suitable for sectors requiring high precision such as automotive, machine tools, aerospace and medical.