Straitjacket Struggles
Components / Pins · Caps · Magnetic keys
Little locks.
Lots of 
Colors
 

SEGUFIX-Style Pin Locks & Magnetic Keys

Ever thought your SEGUFIX locks were boring in black? Or found acquiring them too complicated and costly? These colorful replacement locks will be sure to add a touch of fun. Choose your pin length and cap color, and add a few magnetic keys.  

Choose options on Square

Individual selections · Current availability on Square

SEGUFIX-style magnetic pin locks, colored caps, and keys.
01 / Choose the fit

Short or long?

28 mm

Short pin

Use the shorter option when it passes through your fastening and leaves enough room for the cap to lock fully and release freely.

34 mm

Long pin

Consider the longer option for a thicker fastening or more material on the pin. Check the assembled fit rather than assuming longer is always better.

Replacing a pin? Compare it with your existing one. Trying a new combination? 

Ask me about your configuration
SEGUFIX-style magnetic pin locks, colored caps, and keys arranged together.
02 / Pick your combination

Eight colors.
A few ways to keep the key.

BlueYellowGreenPinkRedWhiteBrownBlack

Match the jacket, mix your colors, or make a particular lock easier to spot. Cap colors are offered with both pin lengths; Square shows which combinations are available.

The current magnetic key choices are:

  • Black key / black cover
  • Black key / red cover
  • Chrome key / red cover

Choose the finish and cover you prefer. Keys are separate selections; I recommend you get a key even if you already have a compatible magnetic key. I think these keys are incredibly satisfying. 

Red, black, and chrome SEGUFIX-style pin locks with removable protective covers.
Your selectionWhat you receive
28 mm or 34 mm pin lockOne metal pin in the selected length, plus one locking cap in the selected color. Magnetic key sold separately.
Magnetic keyOne magnetic key in the selected finish, with the selected red or black cover. Pin lock sold separately.

Each Square selection is sold individually. Add the different colors, lengths and keys you want to the same order. The assortment photos show the range, not a bundle.



These are aftermarket components, not genuine SEGUFIX products. In my testing, they have worked interchangeably with the original round-pin magnetic locks and keys.




Two Leather Posey Replica wearers showing crossed front sleeves and rear buckle closures.
03 / On the Leather Posey Replica

A buckle sets the fit.
A pin keeps it there.

When we adapted the Posey design to leather, we used traditional belt buckles and added pin locks at the fastening points. The buckle adjusts the strap; the pin lock adds a keyed fastening once it is set.

It also gives you another little detail to make your own. Black on black, a contrasting color, or a whole mix—I have quite a bit of fun with that.

Explore the Leather Posey Replica
04 / Order your assortment

One extra.
Or a whole bunch.

Mix eligible pin locks and keys in the same order. Square applies the quantity discount automatically at checkout.

Close-up of a magnetic key releasing a lock on a Leather Posey Replica buckle.

1–4 items

$15.00each · standard price

5–9 eligible items

$12.00each · save 20%

10+ eligible items

$10.50each · save 30%
Choose options & buy on Square

Prices and discount tiers checked October 6, 2026. Square shows current pricing, eligible selections, availability, shipping and tax.