Which Rounded Nut/bolt Extractors And Stud Removers Brand Wins?

one size fits most: hex, hook, cap, and nut; made in China; 54 individual hardened steel spring pins that retract to the shape of most objects; comes with an adapter

made in China; adjustable by rotating the tool casing, clockwise for a smaller nut and counterclockwise for a larger nut

made in Taiwan; detailed application steps involving hand-tightening, wiggling, hammer-tapping deeper onto the bolt head, and wrench assistance before using a ratchet

made in China; base adjustable for nut sizes 7/16 in up to 3/4 in

sizes 1/4 in (8 mm) to 3/4 in (19 mm); manufacturer/country of origin not stated in the transcript; tapered reverse spiral flute design

made in China; tapered reverse spiral flutes

splits nut sizes 5 to 20 mm with the smaller splitter and 14 to 27 mm with the larger tool; made in Taiwan

proudly made in USA; designed to be used with impact tools; tapered reverse spiral flutes

lifetime warranty; claims to remove rusted and rounded fasteners, work with hand and power tools, offer 10 times longer impact life, and up to 5 times better gripping force; made in China; designed for 1/4 through 3/4 in

designed for 14 to 36 mm nuts; made in China; manual oil pump pushes a knife into the nut

through 3/4 in; manufacturer's online product description says it can be used with impact tools; made in USA with global components

made in USA with global components

claims to easily remove damaged bolts and studs, 6 through 12 mm, with a universal design that fits all types of fasteners; made in China

through 1/2 in, self-tightening; made in Taiwan; claims to break free rounded, rusted, and painted-over bolts

through 3/4 in; claims to grab onto the stud for easier removal; chrome molybdenum gear claimed for strength and durability; made in Taiwan

removes studs from engine blocks, exhaust manifolds, cylinder heads, and other applications; range 3/8 through 3/4 in; made in Taiwan

removes 1/4 through 3/4 in studs; unique off-center gripping wheel claimed to sit flush against the flat surface to grip the stud at its lowest point without damaging threads; lifetime warranty; made in USA

made in Taiwan; design with three steel pins and three steel sleeves

diameter just over 1 in, versus the 5/8 in test bolt

diameter 1.5 in, larger than the Effecteer

diameter 1.457 in

needs about 1.5 in of space from the bolt center, not ideal for tight spots

diameter very close to the socket size, described as a great choice for tight spots or hard to reach areas

diameter 0.836 in, slightly smaller than the Amartisan

needs about 1.5 in of space from the bolt center, not ideal for tight spots

diameter 0.885 in without the hexagonal flats, described as really ideal for very tight spots

straight flutes with little to no taper; diameter 0.942 in, slightly larger than the other socket-style extractors

diameter 2.5 in, definitely not ideal for tight spaces

diameter nearly identical to the Irwin

smallest diameter of all the bolt extractors tested, about the same as an impact socket, just over 1 in

only 4.6 ft lbs, failed

struggled and failed

succeeded outright; transcript states '87 in lbs was enough to loosen the rounded bolt,' with only minor wear to the teeth

succeeded at 86.5 ft lbs, no visible wear or damage

succeeded, holding grip at 84.4 ft lbs, no visible wear or damage

succeeded at 85 ft lbs, no visible wear or damage

the original size slipped at only 15.4 ft lbs; the next size smaller had to be forced on without a taper to help, and that size succeeded, maintaining a good grip and loosening the bolt at 94 ft lbs, no visible damage

the original size lost grip at 61.9 ft lbs; the next size smaller was tried and broke at 57 ft lbs while being installed on the rounded bolt, with a chunk of the tool breaking off and never being found

the larger 5/8 in size lost grip, like the Irwin; a smaller size succeeded, maintaining a good grip and loosening the bolt at 82.3 ft lbs, with a small amount of wear to the flutes

seemed completely unfazed by the lubricant, maintaining grip and snapping the bolt at 115 ft lbs

needed a few taps with a hammer but outlasted the bolt, which broke at 104 ft lbs

lost grip at 44 ft lbs; a few more light hammer taps improved it to 82 ft lbs, but it lost grip before the bolt broke

locked onto the bolt and never lost grip, snapping the bolt at 107 ft lbs

lost grip at 99 ft lbs; narrator attributes this to the lack of tapered flutes, saying it did not grip quite as well as some less expensive tools

did a terrific job locking onto the bolt and not letting go, the bolt broke at 108 ft lbs

had more strength than the bolt, providing enough torque to snap it off; held up very well with no visible damage

performed exactly the same as the DeWalt, outlasting the stud with no visible wear or damage and gripping well

won the torque contest with ease once there was room to swing it, gaining a terrific grip and breaking the bolt at 99.5 ft lbs, no visible wear or damage to the gear or tool

performed very well, outlasting the bolt just like the Powerbuilt, no visible damage to the gear or other parts

seemed a little quicker to gain a firm grip than the Powerbuilt and Lisle

made quick and easy work of the contest, easily snapping the bolt at 105 foot-pounds, no visible wear or damage

struggled with a grade 8 nut; 110 ft lbs applied to the tightening bolt without success; repositioned for a second attempt but the chisel deflected as it pressed into the nut

took 74 ft lbs to drive the chisel most of the way through the nut; repositioned to the opposite side but the tool's size and design put it at a bad angle, and it could not finish splitting the nut; the chisel took quite a bit of damage

the test nut was torqued to 100 ft lbs; the tool successfully split it cleanly, after which it could easily be moved with pliers; the narrator rotated the nut 180 degrees and split it again successfully; minimal thread damage, described as a small line where the tool touched the threads with the threads still in good shape; no visible damage to the chisel

functions like a chuck on a drill press; counterclockwise rotation tightens the tool; main body just over 1.5 in diameter, tapering to just over 1 in

gear bites into the stud as it's rotated counterclockwise; diameter over 2 in; offset design fastens to the bolt, requiring a lot more swing space (the narrator had to remove an adjacent bolt to fit it)

gear supported by the tool body on each side; can turn a bolt clockwise and counterclockwise; diameter close to 2 in, needs more swing space like the Powerbuilt and Lisle