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Extensive testing has resulted in the development of an optimum composition blend for a high performance tungsten electrode
Designed to work in confined areas
Model: EC3-100
For heavy stock removal
STEP DRILL REAMER -5/16" 1-1/16"(3step) SIZE:5/16-9/16 01W151 Extensive testing has resulted inEnlarge holes easily and consistently. The Multi Step reamer step drill kit comes in three different sizes, providing only the only tools you'll need to enlarge holes in metal plates up to 1 2" thick from 5 16" diameter all the way to 1 1 16". Features Made with premium grade HSS to last longer; Stepped geometry for fast hole making and enlarging; 3 8" reduced shank with 3 flats to reduce slippage in drill chucks; Black oxide surface treatment