Stop break-ins before they start.
Lok-N-Blok Max is a deadbolt security device that locks your front door deadbolt in place in under 5 seconds — no screws, no drilling, no tools.
UP TO
15%
See exactly how it works
How Lok N Blok Max helps to secure your deadbolt and how it helps to prevent break-ins.
Built to defend one job
No installation, no hardware store trip — just a fast, no-tools way to lock down your deadbolt and help to keep your family safer.
No Tools, Ever
Slides on and off by hand — no screws, no drilling, no marks left on your door.
Fits Either Direction
Works with both left- and right-handed deadbolts, no modifications needed.
One For Every Door
Front door, garage side door, back door — cover the whole house.
Will it fit your door?
Lok-N-Blok Max fits most standard doors. Just measure from the center of your deadbolt knob to the center of your door handle — if it's 8" or less, you're good to go.
Note: not suitable for fully rounded knobs.
One per door. Bundle & save.
Most households cover the front door, garage entry, and a back door — bundling saves the most per unit.
Front door + garage door — the most-ordered combo.
Add to CartLok-N-Blok vs. the alternatives
| Deadbolt + Lok-N-Blok Max | Regular Deadbolt Alone | |
|---|---|---|
| "Bump key" proof | ✔ | ✘ |
| Lock-picking proof | ✔ | ✘ |
| Stops 3D-printed copy keys | ✔ | ✘ |
| Protects against previous tenants/relationships with a key | ✔ | ✘ |
| Lifetime warranty* | ✔ | ? |
| Lok-N-Blok Max | Other Deadbolt Devices** | |
|---|---|---|
| Easy to use | ✔ | ? |
| No tools required | ✔ | ? |
| No screws or chains | ✔ | ✘ |
| No altering of the door | ✔ | ? |
| Portable | ✔ | ? |
| Virtually unbreakable* | ✔ | ✘ |
| No moving parts, one-piece design | ✔ | ✘ |
| Made of ultra-strong ABS plastic | ✔ | ✘ |
*Warranty covers manufacturing defects only — not damage from misuse, neglect, or alteration; original receipt required for claims. Lok-N-Blok Max is designed to be virtually unbreakable under normal use. **Based on other products with a similar function.
Three steps. No hardware store.
Turn Your Deadbolt to Locked
Works with the lock you already have — nothing to replace.
Slide Lok-N-Blok Over the Thumbturn
Fits snugly by hand, both left- and right-handed.
Done — Remove It Just As Fast
No residue, no marks. Bring it when you travel too.
People are showing their followers how Lok-N-Blok Max works — tap to watch.
Trusted by families nationwide
Lifetime Warranty*
Recyclable Materials
5-Star Rated
Made in the USA
One extra layer of security
So Simple & Effective
This works perfectly — I feel much safer and secure. Super easy to use, and I didn't have to install anything on my door. We put one on the garage too.
Best Purchase for Peace of Mind
We had a run of break-ins in our area, so we bought this hoping to stay safe. Our doorbell camera caught someone at our door overnight — glad we had it on.
We Love This Product
We didn't want anything screwed to our door or some ugly thing permanently attached. This was a no-brainer — we use it every day and got some for our parents too.
A few common questions
Lok-N-Blok fits standard residential deadbolt thumbturns, both left- and right-handed. Check our sizing guide if your turn-piece is decorative or oversized.
Not at all. It slides on and off without screws, adhesive, or drilling — nothing is altered on your door or lock.
Yes — it's designed for quick removal from inside the home, so it never traps you.
We recommend one per deadbolt-equipped door: front entry, garage side door, and any door you use as a child-safety barrier.
Secure every door.
Starting at $12.73 each.
Free shipping on orders over $75 · Lifetime warranty* · Ships from California
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