When you need to lock two bikes together or wrap around a thick post, length matters. The ETOOK 655 key chain lock gives you 1500mm of 9mm square hardened steel chain and a tough, fully enclosed lock head.

Highlights

• 1500mm long, 9mm square-section chain
• Special hardened steel with heat treatment, built to resist shearing, thumping, sawing and drilling
• Lock cylinder with a Swiss anti-drill piece
• Fully enclosed lock head, wrapped in hardened steel under the plastic cover
• ETOOK security level 6
• 3108 g

Inside the lock head

ETOOK has updated the lock head's inner structure and anti-theft system on this model. The cylinder's anti-drill piece and shaped design are made to resist picking and drilling, while the steel-wrapped head is hard to damage or thump open.

Locking up

No lock makes a bike theft-proof. For the best protection, lock through the frame to a solid, fixed object in a busy, well-lit spot, and keep the chain off the ground where you can.