










🛠️ Bend it right, fix it fast — the pro’s secret weapon!
The FastCap KNUCKLEBENDER is a lightweight, steel-crafted adjustable knuckle bender with a built-in hinge pin remover, designed by a carpenter to deliver fast, precise door hinge adjustments. Its universal fit accommodates any hinge size, making it ideal for both professional contractors and DIY enthusiasts seeking efficient, damage-free repairs.





















| ASIN | B0082DDNHO |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 297,491 in DIY & Tools ( See Top 100 in DIY & Tools ) 234 in Rebar Cutters & Benders |
| Colour | Multicoloured |
| Customer Reviews | 4.3 4.3 out of 5 stars (3,645) |
| Date First Available | 13 May 2013 |
| Included Components | Knuckle Bender |
| Item Package Quantity | 1 |
| Item Weight | 100 g |
| Item model number | KNUCKLEBENDER |
| Manufacturer | Fastcap |
| Material | Steel |
| Package Dimensions | 19.3 x 10.69 x 2.11 cm; 100 g |
| Part Number | KNUCKLE BENDER |
| Power Source | Crank |
D**R
Quality and price
Good product and fast delivery
S**.
Don’t work
I should have took notice of the other review that it don’t work! .. £30 down the drain . It don’t grip on to the hinge and when I try and pull it back the door frame is in the way .
V**V
Useless
The most useless and not suitable for anything “tool” I have ever bought. In what universe it does something to door hinges I just fail to grasp. You will scrape doors hinges frame spending hopeless hours trying to get something out of it. Or you could just pack hinges with packers in seconds and move on. AVOID at all cost.
R**T
Ist big mistake
Nothing to like should be canceled its not working I really disappointed with that item I returned is horrible
T**R
Great little tool
Great little tool, does the job it’s intended to do and is quite sturdy
E**R
Great product , does the job
B**O
I used the Fastcap Knuckle Bender on a heavy exterior metal door with fairly large hinges and it worked for me. The door was overlapping the jam at the top by at least an 1/8th of an inch. To get it to close you had to either slam it very hard or lift it by the handle when closing it but even then it was binding at the top. I never thought I could fix the problem myself, I was sure it was a job for an experienced carpenter or door hanger. But by chance I came across a YouTube video showing how to "adjust hinges" on doors that wouldn't close properly using a crescent wrench. One video led to another which led to one using the Knuckle Bender. Now I have crescent wrenches but truthfully they could have been anywhere in the house, the basement, the garage, etc. and I just didn't feel up to looking for them so I ordered the Knuckle Bender if only because it was a tool specifically designed for the job and at a reasonable price. I read the negative reviews here but there were a number of positive ones too so with some trepidation I set off to try and fix my door problem. I knocked out the hinge pin and carefully used the tool to bend back the "knuckles" or "barrels" on the hinge half that was attached to the door. I only bent them a little each time out of caution, it took several sessions until I got the door to close without a problem. I guess I could have done it with a crescent wrench but the Knuckle Bender worked nicely so I recommend using it instead of a crescent wrench. Some notes- First of all, do not open the door while adjusting the knuckles except as noted below. Second- In my case the pin on the tool used to knock out the hinge pin worked with only moderate success. About 2/3 of the way out the base of the pin on the tool wedged into the door. Any further hammering would have only wedged the tool base further into the door. At that point I simply put the business end of the tool against the top of the hinge pin and adjusted it to close around the lip of the pin and hammered against the tool driving the pin up and out. It was a minor and easily solvable problem. Third- Remember that once you bend the hinge knuckles attached to the door they will no longer line up with the hinge knuckles attached to the jamb and the hinge pin will no longer slip down through both sets of knuckles. You could try shimming the door up until the knuckles line up. That did not work in my case so I had to carefully open the door and maneuver it until the knuckles lined up. Doors can be heavy, be ready to support it once you open it.
M**E
Good unit, only good for larger hinges. Not enough clearance on non mortice hinges kn Australia
N**H
Works reallt well. We bought one for each trailer. Can do the adjustments when he hinge still attached to rhe door. Unless the trim is too close.
D**G
Excellent product! Fully adjustable dont need a different tool for every different size. Fixed a sticking closet door in about 30 seconds.
Trustpilot
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