New Designed carbide twist drill Bits Set drill set twist hss drill bit set for stainless steel
MATTERS NEEDING ATTENTION:
1. The opening material must be fixed well, and form a90 degree angle with the opening device°right1angle
2.In the process of opening, it is necessary to addcoolant to prolong the service life
3.When drilling, it is necessary to contact the objectslowly, and it is not allowed to impact the work
4. The speed should be low (the larger the hole openeris,the lower the speed is). When drilling is about togo through, pay attention to slow down speed
5. When the chip removal is not ideal, please stopworking and work after cleaning
6.The drill is a consumable and does not supportwarranty
*The product parameters are measuredby hand,and there are errors, whichare subiect to the actual obiect