About this item:
Prefect for Soft Metal Sheet/Wood/Plastic/Aluminum Sheet/Copper and many other type of sheet metal.Suitable for Home DIY, General Building and Engineering Use.
the step structure, a drill can drill a variety of sizes of the aperture.
You can deburring, chamfering, punching elliptical hole.
Suitable for installation in the pistol drill and bench drill.
the hardness of the workpiece below the use of 25 ° below, such as iron, aluminum, PVC board, insulation board, wood, workpiece thickness 4mm.
Features:
Brand New and High Quality
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. (Water injection cooling while working, it can effectively extend the service life of the drill bit, especially in the case of continuous drilling)
Package includes:
1 x Drill Bit 3-12mm
1 x Drill Bit 4-12mm
1 x Drill Bit 4-20mm
1 x Bag
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)
They work well and I am glad I bought them.
Are use these to drill about 300 holes in my sprinter van to place rivnuts for attaching our l track and paneling. They are so much safer than using traditional bit because you don’t run the risk of punching through too hard.
Excellent step drill. Easily drills stainless steel
Very nice set, I believe it will last a long time
These are amazing in quality. I reemed a 3/4 inch steel plate (pre radiation times) in under a minute. I didn’t even have time to use the tap fluid....
Marvelous cut thru .25" steel...very impressed....so fast! Only used a few times so no data on durability but they look heavy duty.
Good quality and consistent with the description. I recommend the goods and the store. thank you all.
I had to search for a long time in order to find these. I found plenty of cobalt-plated step bits (which I don't understand the purpose of, except to impersonate the cobalt alloy ones) for cheap, but was having a tough time finding a solid M35 cobalt alloy set for a good deal. Until I finally found these. Amazing value.
These are definitely worth the money
Drilled holes through metal with ease
I recommend this product
Nice and sharp. The center punch it came with could have been better. The bits drilled though several different types of metal and are still going strong. I did use oil to keep the bits cool though.
Mine came in a great little tough clothlike kit. Extremely nice. My handyman used them today to do some furnace work for me and loved them. Great price, great product.
Okay, 5 stars because they are a good deal for the price. That doesn't make them high quality though. You're not going to buy these if you're going to depend on them professionally. They are however, fine for a home handyman that doesn't need one often, and knows how to drill without ruining a bit. The punch worked fine and so did 3 of the bits that I used for a small project I bought them for.
I used the step drill to drill through my lawn mower deck to install a deck hose cleaner. The deck had a small hole in it but needed to be enlarged. The step drill bit effectively and cleanly enlarged the hole to the necessary diameter I needed easily. No more drilling headaches for me.
Works as expected, like it.
Product is what was expected and needed. Delivered on time within 2 days.
Worked great for what I needed👍🏼 Left a nice beveled edge
The drill bits work like charm and if you need to drill something then drill it because these will get the job done!
Solid, well made, the punch is an added value, and they have already cut many holes problem free.
The bits worked very well for drilling in 1/16" aluminum. Very reasonably priced.
Love this set of drill bits! Great quality and value.
I like this step bit set. I used it on type L copper works great.
Perfect. I have used all the bits. Just what I needed. Thank You!
Excellent. works great couldn't be happier. so glad i got them
Worked just fine. Easy cutting. Good price. Lots of sizes. Very satisfied.