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Mastercool 90376 is a valve-core remover for R12 service, with built-in storage for six replacement access valve cores.
- Application: R12 valve-core removal
- Included: Valve-core remover plus 6 replacement access valve cores
- Replacement cores: Mastercool 90377, supplied as 6 × 0377-001 standard valve cores
- Function: Quickly removes and replaces compatible service-port valve cores