OnGuard Mastiff Chain Lock

Mastiff series chain locks provide superior protection for medium/high crime areas and are packed with features

Chains made of titanium-reinforced, hardened steel links that resist cutting or prying
Chain cover protects paint and finishes, with an embroidered logo that wont flake or wear off
Locking mechanisms secure the lock at multiple points: X4P Quattro Bolt shackles on models with separate shackle; X2P Double Bolt on models with integrated locking heads.
Locks use Z-cylinder tumbler mechanism that is bump-proof and resists picking, pulling, or drilling
Co-molded crossbar cover protects finishes and all-metal endcaps provide protection against hits and drops
Automatic keyway cover helps seal lock internals against the elements
5 laser-cut keys, 1 with micro-LED

Dispatch times may vary. Our stock levels are live and most orders placed before 2pm are shipped same-day (Monday to Friday). Estimated dispatch times are shown alongside stock levels for reference.

Please note that delivery times are estimated from the point of dispatch, not when your order is placed.

UK

• Standard UK shipping is FREE on all orders over £20.
• Express shipping options are available at checkout.

EUROPE

• Europe standard shipping is £3.99 with an Express option available.
• We have had to disable shipping to the EU. We hope to be able to resume shipping to more EU destinations shortly.

REST OF THE WORLD

• We have had to suspend shipping outside of the UK. We hope to be able to resume shipping worldwide shortly.

We offer a no-quibble 30-days refund policy*. There's no need to contact us before returning your item(s). Simply send it back to the following address:

Sprocket and Gear (Returns), Kingfisher Works, Tag Lane, Hare Hatch, RG10 9SH, United Kingdom

Be sure to include your order number and reason for return. Sorry, but we can't cover, or contribute to, the cost of the return.

* To read our full returns/refund policy please click here.