Pneumatic CV Joint Boot Spreader/Expander. Function: It is used to install universal stretchable CV joint boots without needing to remove the driveshaft or disassemble the joint. Mechanism: Uses compressed air to expand the metal fingers, stretching the rubber boot so it can be slid over the CV joint. Compatibility: Suitable for rubber CV and steering boots, but not for plastic (PVC) boots. Features: Typically includes an air control switch to adjust the amount of expansion.
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