Feature:
BETTER CENTER DRILL BIT:The center drill bit is higher quality, sharp with split tip, it can drill the holes very fast. and stronger.
SHARP SAW:The sharp teeth is HSS M42 Bi-metal saw,it can open hole in shorter time with neat opening.
OPERATION:The shank is 3/8 inch, it is good for most of the hammer drill.Please be sure to tighten the thread between arbor and hole saw when assembling.
Advantage:
1.Sharp and strong to make holes on all kinds of wood,metal
2.This 2.5 inch hole saw is cheap and cost-effective. It can finish the work with as little money as possible
Notice:
1.When starting drilling,please firstly cutting at a slow speed, after the teeth go into the material,then use the normal or high speed.
2.The hole saw is sharp, so it is dangerous,please be careful,and not let children touch it. and please be sure to tighten the arbor with hole saw.