hss coated cone angle drill saw for wood metals for round circels conical cutting drillbit saws attach to drills wood cutting grinding cone vs Hss head
DIY Supplies: metalworking
Type: center drill bit
Use: metal drilling
Model Number: drill bits
Material: high speed steel
Note! Estimated Delivery 30-50 Days
30 Day Warranty We are ready for you!
If the item you ordered does not fit or if you are dissatisfied with it, we will accept your return shipment up to 30 days after the order was shipped.
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Made from high quality HSS steel Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc. Titanium coated to reduce mit and heat Heat treated and highly polished. Drills perfectly round holes in steel, brass, plastic, wood etc. 3 sided shanks design in order to prevent slippage when in chuck Two flute design drives faster, smoother and cleaner cuts each step is clearly labeled with the depth diameter in steps
Function: Deburring, Chamfering, Cutting or expanding holes Supporting tools: Pistol drill, Hand drill, Charging drill, Bench drill. Rotating speed:
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.
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)