Description of ๐ง MaxTool Silver Prentice Reduced SD02B00R043: Enhanced Performance for Versatile Applications
Quality HSS M2 ensures sharp and fast execution in any material for clean results. Premium Heat treated black oxide is durable and withstand heavy duty operation for a long tool life. Black Oxide Surface Treatment holds up lubricant better for smoother drilling. 6" OAL & 1/2" Str. shank fits 1/2" drill chuck; Milled & polished flutes ensure chips move smoothly. Precision ground with geometry of 118 degree chisel for quick penetration and an accurate start.
Based on my experience, these industrial drill bits are top-notch. The precision and accuracy of the cuts are impressive. The reduced shank is also a great feature that allows for effortless drill bit changes. The only downside to these bits is that they are a bit pricier compared to other options on the market.
Pros
High-quality cutting performance with reduced shank design for easy operation.
Cons
The reduced shank size may limit the range of machines or tools that can be used with this product.
Did the job, put a knurled .685 OD hole on the wheel studs. However, the tool had an overall runout of about 0.0300, the margins differed by 0.0200 from side to side. Does the job, but if you want an accurate 0.6719 hole, plan closer to 0.700.
I used this to increase the inside diameter of two 3.5" thick pieces of steel from .625" to .672". This allowed me to work 3/4-10. Even with a drill press that revs too high (800rpm instead of around 250rpm, which would be optimal for a piece of this size in steel) it went through both with ease. kept a light but steady stream of water on the bit to keep it cool. Would I use them for a professional business? Probably not. However, I would definitely recommend these bits for the occasional DIYโฆ