*Special HI-TUNGSTEN tool steel, gold surface 
 treated body and clearance for maximum 
 lubricity 
*3 Flats on shank
*These reamers are especially designed for
 reaming structural steel plate commonly found 
 in truck frames, rail cars, bridges and pressure
 vessels 
*All tools are constructed with left hand spiral and 
 left hand cut 
*A left hand spiral eliminates the tendency of the
 reamer to hog into holes;  this feature makes a 
 stop collar unnecessary