Suitable for thin 1mm-5mm wood, aluminum alloy, plastic board on the cutting groovesuitable for lithium electric drill/hand electric drill/bench drill and other equipment.
Note to users of lithium electric drills: 12V lithium electric drills have insufficient torque, so it is not recommended to use them. It is recommended to use 36V and 48V lithium electric drills.
Package included:Step Drills4-12/4-20/4-32mm +Spiral Taps 3/6/8mm
Package :6Pcsbox packaging
Material: High Speed Steel
Supporting tools: Charging drill, Bench drill ,Pistol drill, Hand drill
Suitable Material:
Workpieces with general hardness, such as wood, plastic, PVC plate, iron plate, plate thickness within 3MM. Please note that stainless steel and spring steel are not applicable. Not for quenching. (Water injection cooling while working, it can effectively extend the service life of the drill bit, especially in the case of continuous drilling)
Attention:
Because of the outer diameter of each step of the step drill is gradually expanded,then the corresponding cutting resistance and linear velocity will also be gradually increased.
Owing to the step drill is completely dependent on the inclined edge that is only with 1mm length,If the feed speed is too fast when drilling,it will be easily to be annealing caused by abrasion of the oblique edge.
Please give a downward force when drilling, do not press down too hard to avoid the edge wearing.
