INDUSTRIAL 2 WHEEL CLAMP KNURLING TOOL, NEW TO RDGTOOLS. SHANK SIZE 3/8" WILL FIT SOME MYFORD'S ALL DEPENDANT ON WHICH TOOLPOST IS BEING USED, THE HEAD SELF ADJUSTS TO CENTRE HEIGHT, HEAD CLAMPS ON WORK BY THE KNURLED NUT ON THE TOP OF THE HEAD, A LOVELY QUALITY TOOL, THIS IS A SPECIAL PRICE WHILE ORIGINAL STOCK LASTS, CAPPACITY 32MM