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SouthOrd Clear Plastic Practice Lock (Spool Pins)
Right, so you've got the hang of standard pins. But not all locks have standard pins. Many have security pins like SP... more
Right, so you've got the hang of standard pins. But not all locks have standard pins. Many have security pins like SPOOL pins. It's not a puzzle when you have the whole picture. Clearly brilliant!
Spool pins make you think you've correctly set the pin, where in fact you've just felt the spool on the shearline. Have a look at the short animation below to see how they work.
Video
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Spool pins in action animation |