![COMOWARE Step Drill Bit Set & Automatic Center Punch- Titanium Coated, Double Cutting Blades, High Speed Steel, Short Length Drill Bits Set of 5 pcs, Total 50 Sizes with Aluminum Case](https://images-na.ssl-images-amazon.com/images/I/51QTVuQAWfL.jpg)
I have found it to be such a pain to expand a smaller hole to a bigger one. Step drills just make it so much easier w/o boogering up the hole. Now mine are pretty new and I have only used them 3 times., so I don't really know yet if they will hold up well. The description says "titanium coating", but really no way to know for sure. First drill out was a stainless steel washer that was right OD, but I needed a bigger hole. Made the cut with no problem. Did remove the gold "titanium coating" at the step up to the bigger hole, but didn't seem to damage the bit. Frankly a 5 bit set, with a counter punch for $24, in a really nice padded carry box is a good deal, even if they wear out faster. The Milwaukee 3/4" HS drill bit was $45 at Lowes for a one time use?
WORKS GREAT SINCE MY DRILL PRESS BROKE THEY ARE EASY TO USE WITHOUT NEEDING TLO FIND BIG DRILL BITS OR HOL SAWS.
all the sizes I need and work great on fiberglass boats
Nice complete set for my needs at a great price.
I have only used it one time. It comes in a very nice case. Step drills are a must have for drilling holes in electrical equipment.
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Feature Product
- HSS Titanium Coating - High speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler.
- Meet Your Demands - With the step drill bits we offered, you can process different kinds of diameter holes, which greatly saves you a lot of trouble.Great for metal/wood/plastic countersunk. Suitable for Home DIY, and General Building/Engineering Use.
- Design - The split point tip is at 118 degrees to increase the wear resistance. The two flute design provides a smoother cutting, allows the material particles escape easily for a much more clean drilling operation.
- Easy Organizing - A drill bits holder with size index is included in the metal kit for easy storage and organizing without fear of it falling out.
- Set Includes - The drill bits set includes five common sizes for versatility, can fit the majority of brands currently on the market.
Description
Features:
COMOWARE step drill bits can replace 50 individual drill bits. 118 degrees split point tip design provides faster and smoother cutting, increase the wear resistance. HSS along with titanium coating ensures the bits stay sharp for years, perfect to drill holes on steel/aluminum/plastic etc. A well-organized case provides users with easy storage and transport, truly a must-have for DIY lovers.
Package:
5 x Step Drill Bit Set
1 x Aluminum Case
Size Include:
#1: 3/16" to 1/2" 6 Steps (3/16", 1/4", 5/16", 3/8", 7/16", 1/2")
#2: 1/8" to 1/2" 13 Steps (1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2")
#3: 1/4" to 3/4" 9 Steps (1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4")
#4: 1/4" to 1-3/8" 10 Steps (1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8")
#5: 3/16" to 7/8" 12 Steps (3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8")
Notice:
Please keep cool and gentle using, the working life of the step drill bits can be largely prolonged by proper usage.
Love the box sex size plus the durability
They work great on 24 gauge steel exactly what we purchased them for.
There is nothing like having the proper tool!! I used these in my aluminum boat to cut perfect wiring holes it cut the 1/4" diamond plate aluminum like butter I see many more applications in the future.
Works greats...And for that price is a steal!!!!
I've tried a couple of the bits and they are working fine.
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