This boring head is used to enlarge existing holes or create new ones with a high degree of accuracy and precision. It is typically used in milling machines and can be adjusted radially and axially to achieve the desired hole diameter and depth. It boasts a practical design that maintains great rigidity even when the boring bar holder is utilized in an offset position. Its hardened and ground-adjusting screw, combined with a broad base design, ensures longevity and seamless operation. Equipped with an offset reading dial that shifts and reads 0.040" per revolution of the adjusting screw. Item No. Body Dia. Overall length Max offset Boring bore dia Graduation Max Dia of Boring 437-2002 2” 61.6 5/8” 1/2” 0.001” 3/8”–5” 437-2003 3” 80.2 1” 3/4” 0.0005” 1/2”–9” 437-2004 4” 93.2 1-5/8” 1” 0.0005” 5/8”-25” 437-2050 50mm 61.6 16mm 12mm 0.01mm 10–125mm 437-2075 75mm 80.2 25mm 18mm 0.01mm 12–225mm 437-2100 100mm 93.2 41mm 25mm 0.01mm 15–630mm