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: 160mm. Boring bar hole size: 18mm. Fine feed per graduation: 0.02mm. Max. stroke of slide block: 25mm. Order No. 437-2341 Optional Shanks: Order No. Shank Size Order No. Shank Size 437-2345 R8-7/16”-20UNF 437-2353 MT4 tang 437-2346 MT3xM12 437-2354 MT5 tang 437-2347 MT3x1/2”-13UNC 437-2355 ISO30xM12 437-2348 MT4xM16 437-2356 ISO30x1/2”-12UNC 437-2349 MT4x5/8”-11UNC 437-2357 ISO40xM16 437-2350 MT5xM20 437-2358 ISO40x5/8”-11UNC 437-2351 MT5x3/4”-10UNC 437-2359 ISO50xM24 437-2352 MT3 tang 437-2360 ISO50x1”-8UNC