Features: 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. Includes an optional shank for seamless connection with the boring head. Max. boring diameter: 10 to 150mm. Boring bar hole size: 12mm. Fine feed per graduation: 0.025mm. Order No. 437-2370 Optional Shanks: Order No. Shank Size Order No. Shank Size 437-2374 R8-7/16”-20UNF 437-2386 ISO30xM12 437-2375 M2xM10 437-2387 ISO30x1/2”-12UNC 437-2376 M2x3/8”-16UNC 437-2388 ISO40xM16 437-2377 MT3xM12 437-2389 ISO40x5/8”-11UNC 437-2378 MT3x1/2”-13UNC 437-2390 ISO50xM24 437-2379 MT4xM16 437-2391 ISO50x1”-8UNC 437-2380 MT4x5/8”-11UNC 437-2392 12mm 437-2381 MT5xM20 437-2393 16mm 437-2382 MT5x3/4”-11UNC 437-2394 20mm 437-2383 MT3 tang 437-2395 25mm 437-2384 MT4 tang 437-2396 32mm 437-2385 MT5 tang 437-2397 40mm