ITEM NO: SDCA3001 / SDCB2401 Manufactured from heat treated Chrome Vanadium Alloy Steel Special tool for repairing damaged or worn internal/external threads on bolts, studs, shafts and etc. Also suitable for both left-hand and right-hand threads Ideal for use in concealed and narrow areas All pitches are clearly marked on the files Each restorer file contains 8 pitch sizes of threads
