IEY1299 Features: * For cutting all types of internal threads * Standard pipe and metric available (sold separately) * Made to exacting specifications * Tough carbon tool steel for long life * Cut cleaner more accurate threads and lasts longer * Right-hand thread taps in plug, taper and bottom styles * Drill size permanently marked on each tap * High Carbon Steel Fractional Tap Plug 5/16 IN. - 18NC - Carded Warranty: * Lifetime warranty does not cover abuse