Item No.: P09Y202

 .Piral step drill bits that simply outperform any
 conventional drill design in almost all materials
 eliminates bit and the need for pre-drilling
. Precision ground from heat-treated quality M35
 high-speed steel
 .Size:1.5,2,2.5,2.75,3,3.5,4,4.5,4.75,5,5.5,6,6.5,6.75,7,7.5,
 8,8.5,8.75,9,9.5,10,10.5,10.75,11,11.5，12,12.5,12.75mm；
 Finish amber