Tap-Plug 8.0 X 1.00 And Drill Bit Letter I Combo Pack Product Features:Tap-Plug 8.0 X 1.00 And Drill Bit Letter I Combo PackMetric carbon steel plug style tap offers precision cut threads accurately formed for consistent exact threadingHeat treated and tempered for file hard threads and longer useful lifeDesigned for hand cutting applicationsLetter gauge drill bits are made from premium grade high speed steelPrecision ground 118 degree pointsDesigned to operate in stationary or portable toolsGeneral purpose drilling in wood metal and plastic