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1/4" shank diameter x 3/4" flute length x 2-1/2" overall length
2 Flute, 120 Degree Solid Carbide Spotting Drill, AlTiN Coated, Square End
Features:
AlTiN Coated for improved performance and tool life in harder materials or high temperature applications.
Solid carbide tools offer long tool life and faster cutting speeds than other substrates, Carbide can run at higher speeds than high-speed or cobalt steel, resisting wear and high cutting temperatures.
Precision ground using the highest quality grinding wheels. High strength and hardness, abrasion resistant, practical, easy to use and durable in use.
Premium 10% Micrograin Carbide perfect for your general purpose or difficult application.
Package Included:
2pcs 1/4" 2Flute 120 Degree Solid Carbide Spotting Drill
David
Reviewed in the United States on February 27, 2025
First use, went to center drill a piece of aluminum on the lathe and instantly chipped the flutes. Never had that happen with a spot drill before. Get what you pay for.
MJLaverty
Reviewed in the United States on August 25, 2024
I mainly use these to mark holes that are refined after CNC operations. works great and allows for hand drilled holes to be drilled accurately. still on my first one after 2 months of moderate use.
Yoav Liberman
Reviewed in the United States on July 11, 2024
This is a solid and durable bit set. To maximize longevity and efficiency and to prevent chipping, use appropriate speed and lubrication and avoid wobbling or angle changes during drilling. The AlTiN coating and 120-degree tip design enhance performance, making these bits reliable for precision work.
I'm Lettin ya know
Reviewed in the United States on June 19, 2024
Found these 120º 1/4" solid carbide spotting drills here on Amazon which was way less expensive than MasterCarr. Boy was I disappointed.First time use... The tip shattered after getting about 60 thou (1/16") into center punched mild steel (Left bit in both photos). I didnt bother trying the second bit. Finished the spotting with a center drill.Returning asap.
Joey B.
Reviewed in the United States on November 23, 2024
Perfectly maked . Drills dead 1/4 hole
Avadon
Reviewed in the United States on October 8, 2024
I did about 20 holes through 5/8's hardened steel with just one of these spotting drills before it dulled. I'd say I definitely got my money's worth. They are a beast!!
Random Dave
Reviewed in the United States on April 8, 2024
The price/performance of these drills is great. I have been using them for Lexan and aluminum, and they have been working exceptionally well in my CNC router. I have yet to destroy one, so I can't fully comment about durability, but in this soft stuff, I have cut in the neighborhood of 500 holes with one of the drills, and it's barely showing signs of wear. If you work in a professional machine shop, get tooling with a pedigree--it's not worth the risk to your income to both with cheap tooling. But if you are working in a home hobby shop, this seems to be an excellent option and has produced good results for me so far.
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