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From the Anvil Spring Unit Cassette


Product information
Size: 51mm x 35mm
Thickness: 13mm

Additional information

It converts unsprung handles to spring action. It is cut into the door below the back plate either on one or two sides. So if you have a poor lock and you want our handles to work perfectly this is the answer.
This cassette is designed to increase the tension and performance of an old or weak lock.