A Female Clamp Adaptor – 30 mm is a modular structural component used in lower-limb prosthetics to connect and align prosthetic parts securely. It is designed with an internal female clamp mechanism that accommodates a 30 mm diameter male tube or pylon. The adaptor allows prosthetists to join components such as pylons, knee joints, foot adapters, or alignment units within a prosthetic assembly. Manufactured from high-strength materials such as aluminum alloy, stainless steel, or titanium, the adaptor provides durability, corrosion resistance, and the ability to withstand repetitive load forces during gait. The clamping system, usually operated by set screws or bolts, ensures a firm hold while permitting rotational and height adjustments during fitting and alignment.