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Lock with Pyramid

The ALPS Lock with Pyramid is an all-in-one lock body design which combines the lock and pyramid.
The glass reinforced nylon lock body exhibits better wear characteristics than delrin or aluminum.
The convenient one-way gear allows the user to push in or wind out the limb into the prosthetic socket.
A unique feature of this lock is that if foreign material or clothing get caught in the gear, the housing can be removed, freeing the pin.

Key benefits

  • For laminated sockets

  • All-in-one lock body design combining the lock and pyramid

  • Infinite pin adjustment reduces play

  • The housing can be removed, freeing the pin

  • 100 kg (220 lbs) weight rating

Technical Details

Cross Section
Cross Section
ALPS Lock with Pyramid. Part Number and Spare Parts

Spare parts Description
S498-P Main body with pyramid
LDH - 694 A Locking mechanism
LDP - 695 Serrated pin
LDA - 694 Hex nut adapter Dummy

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  • Massimo Giandinoto

    When Massimo was 9, he was diagnosed with osteosarcoma on his left heel and it was decided a month later that the limb had to be amputated immediately. Despite this, he spent a lot of time doing sports like running and pararafting. In 2018 he won the Italian Championship for both the 60-meter and the 200-meter indoor and he was contacted by the Italian Rafting Federation. Sports have always been a fundamental part of his life. It’s what saved him, making him feel like he fits in with everybody else.

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  • Miroslav Motejzík

    In 2010, Miroslav was involved in a car accident and as a result, his left leg was amputated below the knee. Using ALPS liners has increased his confidence, whether it’s riding his mountain bike, hiking or skiing. Miroslav is really active and he motivates others every day.

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  • Daniela Pecinová

    Daniela lost her right leg after a tumor was discovered there when she was 16 years old. Now Daniela is proving she is a fighter. After starting pole dancing – Para pole – she became the world champion in 2016. ALPS liners allow her to wear her prosthesis all day long, keeping Daniela comfortable as she goes about her daily activities.

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