Precise Precision Boring Shanks

• Use for Boring heads
• Made of high grade tool steel.
• Hardened and ground.
• DRAWBAR END THREAD: R8- 7/16" -20, MT2- 3/8" -16, MT3- 3/8" -16, MT4- 1/2" -13, #30- 1/2" -13, #40- 5/8" -11, #50- 1"-8

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