What you are getting
25 multi-spline extractors covering 1/8 to 7/8 inch in 1/32-inch increments — every size enumerated — forged from chromium molybdenum with a manganese phosphate coating, for manual and impact use. $36.99.
It is the only set here that argues the shelf’s own trade-off, and takes the other side
“The multi-spline design provides 360 degrees of grip, maintaining a rock-solid hold where spiral extractors might slip or shear the fastener wall.”
The shelf’s introduction sets out both halves: “Spiral flute extractors tighten their grip as they turn and suit softer, seized fasteners; straight flute designs spread the load and are less likely to expand the bolt against its thread.”
XEWEA is the only listing on this shelf to state the comparison at all, and it states it against the competing design rather than for its own. “Shear the fastener wall” is the specific failure: a spiral extractor wedges deeper as it turns, and on a thin-walled or hard stub it tears the metal it was gripping instead of turning it.
A multi-spline profile has many shallow flutes round the full circumference, so the torque is carried on a great deal of surface at a shallow angle. It does not wedge, so it does not expand the bolt against the thread it is stuck in — which is exactly the shelf’s description of straight-flute behavior.
The cost is the other half of the shelf’s sentence: it does not tighten its own grip either, so it has to be driven on firmly before it will turn anything.
Twenty-five sizes in 1/32-inch steps, which is the finest ladder on this shelf
7/8, 27/32, 13/16, 25/32, 3/4, 23/32, 11/16, 21/32, 5/8, 19/32, 9/16, 17/32, 1/2, 15/32, 7/16, 13/32, 3/8, 11/32, 5/16, 9/32, 1/4, 7/32, 3/16, 5/32, 1/8 inch.
Every gap is 1/32 inch, which is 0.79 mm (0.03 in). On a rounded head that matters: the extractor has to be a size that bites into what is left, and a 1/16-inch ladder would skip past the usable fit on half of them.
XEWEA says why: “25 dedicated extractor sizes eliminate size gaps, making this set suitable when fastener size is unknown or already damaged.”
That is the honest version of the need card on this shelf — “Each extractor corresponds to a range of diameters. A complete set avoids being stuck on one particular screw.”
The NEIKO set in this survey publishes the identical ladder, 1/8 to 7/8 inch in 1/32-inch steps, 25 sizes, at $47.99 — $11 more. The two are the same geometry at two prices, and what separates the listings is which extras each publishes.
Forged, and coated with manganese phosphate
“Forged from premium Chromium Molybdenum steel with a Manganese Phosphate coating for superior corrosion resistance.”
Forged rather than machined from bar means the grain follows the shape, which on a tool twisted to its limit is where it matters. Of the seven items here, two use the word: this and CRENGYBL.
Manganese phosphate is a conversion coating, not a plating — a dull grey-black surface grown into the steel. It holds oil, it does not flake off under load, and it is the finish used on taps and dies for the same reason. It is the only phosphate coating on this shelf; K Tool is chrome-plated and CRENGYBL says only “surface treatment”.
A chrome plating on an extractor is worth a second look: chrome is slippery, which on a tool whose whole job is to bite is not an obvious choice.
Five bullets, and no HRC number.
The introduction asks for “stated hardness”, and the reason is the opening sentence of the shelf: “a broken extractor is harder to remove than the bolt was — the steel is deliberately hard, which also makes it brittle.”
| Item | Hardness |
|---|
| YURINWOO 9 pcs, published | 63–65 HRC |
| CRENGYBL 26 pcs | 58–62 HRC |
| GEDORE 5 pcs, published | 54 HRC |
| VEVOR 16 pcs | 50–55 HRC |
| This set · NEIKO · K Tool · REBRA · TMAX · BGS · CAINCAY · CCLIFE | none |
Four of twelve publish one. On a $36.99 set sold for “high-torque manual and impact tool use”, the absence is the figure that would tell you how much impact it will take — and no torque limit is published either.
Nor is there a drill size table, because this set needs no drilling
Worth saying plainly, because the shelf’s introduction makes the table its headline recommendation: “The most useful thing a set includes is not a tool at all: a drill size table, since the pilot hole decides everything.”
A multi-spline extractor goes over a rounded head or a protruding stud. There is no pilot hole, so there is no table to want — the same is true of the VEVOR, NEIKO and K Tool sets here. The table matters for REBRA, the spiral half of CRENGYBL and the published CCLIFE and YURINWOO sets, and none of them publishes one.
What is not published
No hardness. No torque limit, despite stating impact use. No weight and no case dimensions, where four items here publish at least one. No drive size — the extractors are driven by a socket or wrench and the hex or square size is not stated. No metric equivalents for the 25 inch sizes, which NEIKO publishes. No warranty; what is offered is “24-hour customer after-sales support”.
At $36.99 it is $11 below the identical size ladder on this shelf, and it is the one listing that explains what it chose not to be.
Availability
On sale at around $37 on the American Amazon store at the time of checking.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on 6 October 2026. The live price is at the top of the page.
