ETOOK ET690K Folding Lock

The most secure folding lock ETOOK makes. Full stop.

The ET690K sits at the very top of ETOOK's entire folding lock range: the only model in their lineup to achieve a Security Level 6 rating, designed for riders who won't accept compromise when it comes to protecting a high-value bike, e-bike, or cargo bike. Maximum reach, maximum resistance, maximum peace of mind.

Why Riders Choose the ET690K: ETOOK Level 6 Security

Security Level 6: ETOOK's Highest Rating The ET690K is the only folding lock in ETOOK's entire range to achieve Security Level 6: the highest tier in ETOOK's system, rated for long overnight periods and protection against professional thieves. Every other ETOOK folding lock tops out at Level 5. If you own a high-value e-bike, cargo bike, or premium road bike, this is the lock it deserves.

Hardened Steel Alloy Bars: Professional Attack Resistant The ET690K's bars are constructed from heat-treated hardened steel alloy engineered to resist 12-tonne hydraulic cutters, sawing, drilling, and impact attacks. The kind of resistance that defeats the tools a professional thief actually carries.

Ultra-Strong Rivet Connections Using ETOOK's innovative connecting method, each bar is linked with hardened steel rivets leaving less than 0.2mm gap between connecting points: making the joints as strong as the bars themselves. Every link in the chain is as hard to defeat as every other.

Advanced Anti-Pick Swiss Cylinder The lock cylinder uses advanced Swiss-developed technology with a precision key just 0.3–0.6mm thick: virtually impossible to pick or copy. An anti-drilling cap protects the cylinder from power tool attacks, and a keyhole cover keeps out moisture and debris.

1,100mm Extended Reach At 1,100mm (43 inches) fully extended, the ET690K gives you the reach to properly secure your frame and wheel to a wide range of racks, poles, and posts: without having to choose between frame security and wheel security.

Patented Side-Loading Bracket ETOOK's patented side-loading bracket design makes one-handed removal fast and intuitive. Mounts to any standard bottle cage mount or directly to your frame using the included straps.

Perfect For

• High-value e-bike and cargo bike owners
• Riders locking up overnight or in high-risk areas
• Anyone who wants the absolute best security in a folding lock format

How It Compares in the ETOOK Folding Lock Range

The ET690K is the only Level 6 lock in the ETOOK range: one full security tier above the ET590, ET510, and every other folding lock ETOOK makes. Same 1,100mm reach as the ET590, with a significant step up in security construction. If your bike is worth protecting seriously, this is the lock.