D Locks and U Locks typically feature a heavy duty hardened steel shackle which offers masses of internal horizontal and vertical shackle clearance for maximum versatility.

This makes them a practical choice for use with heavy duty security chains or plastic sheathed, braided steel security cables, where the overall diameter of the steel links or the security cable is too bulky to fit comfortably into the jaws or shackle of a conventional type of padlock.

There are also units such as the Squire Eiger product, which are specifically designed to be used as Bicycle locks, offering a relatively compact and lightweight type of portable security which is practical for the cyclist to carry with them wherever they travel.


Applications include

Portable Cycle Security

Use with buly security chains with large link diameter

As a lock for use with security cables used to lock up garden equipment or tools, etc. 

Special D Locks and U Locks

Squire Eiger 230 Heavy Duty Cycle D lock - Sold Secure Gold Rated


1 - 4

5 - 10

11 +


£23.25 ex VAT

£21.45 ex VAT

Call 01273 475500


Heavy Duty U-Lock


1 - 4

5 - 10

11 +


£12.50 ex VAT

£10.95 ex VAT

Call 01273 475500

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01273 475 500

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Insight Security
Unit 2
Cliffe Industrial Estate
South Street
Lewes, East Sussex

Insight Security is a trading division of Insight International Corporation Ltd.

Co. Reg: 2649410
Vat no: GB 587 6549 73

Category: 1008

  • It's easy to order from us and we're easy to contact...
    whether you need help or advice before or after you buy
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