RapidHold R8 Collet 6mm ID Hex Opening 7/16″-20 Internal Thread .0005″ T.I.R
RAPIDHOLD R8 HEX COLLET HOLDING DIAMETER: 6MM MOUNTING STYLE: HEX TOOL TYPE: R8 COLLETS STYLE R8 MADE OF HIGH GRADE STEEL HARDENED AND PRECISON GROUND INTERNAL THREAD 7/16-20 .0005″ T.I.R THANK YOU FOR YOUR BUSINESS