Best Core Drill Bits
Style: Spiral Flute Extractor Set |. Size: 10-Piece. Set includes spiral flute screw extractors sizes EX-1, EX-2, EX-3, EX-4, EX-5; drill bit sizes 5/64", 7/64", 5/32", 1/4", 19/64", and a metal index case.
Reviews
Find Best Price at Amazon"The left handed bits do an awesome job of removing most stripped screws, and the "easy out" type extractors give me that final oomph when the left handed bits don't quite cut it."
"Unfortunately I broke one of the smaller bits, and one of the smaller extractors."
"This kit was my last hope, and To my surprise, I was able to drill this thing into12mm bolt, and extract with tapping wrench."
"Although these were a day late due to being shipped via AMZL (basically Amazon's version of a supermodel with herpes) their incredible quality, design and performance warrants a 5 star review."
"Drilling in to the broken bolt was effortless unlike most others I've owned and the extraction bit did not strip once which is very uncommon with these tools."
"Extractor broke on first use leaving a bigger problem than the original frozen bolt."
"I know that it's pretty much a crap shoot whenever you try to use these things so I had realistic expectations, but I was pretty disappointed that the drill bit did nothing to remove the bolt material."
"I had to drill through the hardened steel using a carbide bit, stepped up to the next size remover which should have also been able to remove this somewhat small bolt, but that remover snapped off too!"
Electricians, Plumbers and HVAC Pros will appreciate the tough construction of the bit, rated for heavy-gauge carbon steels, as well as light gauge metal and hardwood applications. Enter your model number to make sure this fits.
Reviews
Find Best Price at Amazon"These work well in my Ridgid impact driver, but the smallest ones are too short when the bit is mounted on the drill."
"Always handy to have some extra drill bits."
"This drill bits are very good and easy to change."
"Was able to drill through my tap that broke off in my exhaust manifold without any problem with these."
"Great drill bit."
"Great price, so far they wear well."
"great,fits my impact drill, havn't broke one yet and that's saying something."
"One of the drill's shank broke off and the broken piece is stuck inside my power tool."
Set includes: (2) 1/16" bit, (1) 5/64" bit, (1) 3/32" bit, (1) 7/64" bit, (2) 1/8" bit, (1) 9/64" bit, (1) 5/32" bit, (1) 3/16" bit, (1) 7/32" bit, (1) 1/4" bit, (1) 5/16" bit, (1) 3/8" bit. Enter your model number to make sure this fits.
Reviews
Find Best Price at Amazon"I really like cobalt drill bits."
"Wow, I don't know why I never spent money to get a good set of bits like this."
"Toughest drill bits I/ve found in 40 years being a carpenter."
"only bits I buy now."
"Don't have to deal will dull bits or bits that break off in the hole and make an even bigger headache."
"I used these to drill through some titanium and the bit chewed right through it!"
"drilling bolts out of John Deere tractor tiller only had small one break at high speed ."
"This bits can not make one hole before they go dull."
Best Rotary Hammer Drill Bits
Keyless ratcheting for easy bit changes. Bosch makes the highest quality rotary hammer accessories.
Reviews
Find Best Price at Amazon"This holds a round shank drill bit very well."
"Finally I can use my Bosch hammer drill with regular bits!"
"Second use the grip to tighten or release slipped I had to epoxy it back on waiting to try it again needed the model with keyed chuck."
"Apparently this IS normal for an SDS shank chuck or drill bit-"The drill bit is not held solidly in the chuck, but can slide back and forth like a piston. The hammer of the drill acts to accelerate only the drill bit itself, and not the large mass of the chuck, which makes hammer drilling with an SDS shank drill bit much more productive than with other types of shank". This probably means that the optional HA3JAW keyless chuck should only be used in drill mode, even if you have round shank masonry drill bits."
"I usually use my Dewalt cordless for wood or metal and my Bosch hammerdrill for masonry, but if I'm in a pinch and I need to use my regular (non-SDS) drill bits, this is the perfect companion for my Bosch."
"Fits in the SDS + just fine."
"Regular 1/4 inch drill bit is seized inside chuck and no amount of effort, rotation or force will allow me to remove bit, thereby making chuck useless."
Best Masonry Drill Bit Sets
Applications include drilling nice, neat holes into masonry, concrete, rock, and artificial stone. The product is 7PC MAS Drill Bit Set. Four-flute design cleans debris out for fast, efficient drilling.
Reviews
Find Best Price at Amazon"These drill bits have been wonderful."
"After fighting with drilling a hole in a concrete wall, I finally got these."
"I broke 5 drill bits and it took me four hours to drill to holes."
"These drill bits work great!"
"Great quality hammer drill bits for concrete."
"Drilling into masonry or concrete with a normal drill will frustrate you and ruin the drill."
"For small jobs, thesebirs are fine."
"These bits enter the material like a knife to a good butter."