Mazda 24 Gasket For Alpha Pro Key Cutting MachineMazda 24 Gasket For Alpha Pro Key Cutting Machine As there is a groove near the head, we can find the groove is irregular, whats more, the key is shoulder alignment, that means, we have to fix the key in appointed position, it cannot be adjustable like tip alignment keys. The key can not be fixed well because its special shape, so we improve it by using a gasket (shown as picture) Put the gasket in side D (shown as picture) Fix the original key,