"FMASTER;CONSISTS OF STL BASE,4 HARDENED REST PADS,AND 2 SETS OF CONTRACT BLOCKS FITTED W/REPLACEABLE CARBIDE GAGING PADS;REST PADS & CONTACT BLOCKS SCREWED & DOWELED TO BASE;CARBIDE GAGING PADS EITHER BRAZED OR SCREWED & DOWELED TO CONTACT BLOCKS;1 SET GAGING PADS MASTERED TO 15.5795 DIM FOR (220) &2ND SET MASTERED TO 15.5765 FOR (229);STORAGE CONT. W/FOAM INSERTS PROVIDED;PWA71525 MSTR CALIBRATED EVERY 18 MTHS IN ACCORD. W/T.O. 33K6-4-731-1;SERD 7864"