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HHIP 3903-0138 20mm Metric R8 Round Collet
Made of hardened, high grade tool steel
Precision ground to close tolerance
Internal thread is 7/16"-20
T. I. R. is 0. 015mm
20mm R8 Round Collet ~ Made of hardened, high grade tool steel. ~ Precision ground to close tolerance. ~ Internal thread is 7/16"-20. ~ T.I.R. is 0.015mm.