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🛠️ Master every valve core job with precision and ease!
The Mastercool 81290 is a compact, dual-ended valve core remover and installer designed for R12 and R134a systems. Featuring hardened steel shafts compatible with Standard, JRA, and Eaton large bore valve cores, this durable tool enables fast, pressure-free servicing. Its pocket-sized form factor makes it an essential, portable companion for HVAC professionals handling system recovery, repair, or retrofit tasks.



| Manufacturer | Mastercool |
| Brand | Mastercool |
| Model | 81291 |
| Item Weight | 0.8 ounces |
| Product Dimensions | 2.4 x 2.3 x 1.1 inches |
| Item model number | Standard/JRA/Eaton – R12/R134a |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 81290 |
| Special Features | All Purpose |
| National Stock Number | 5120-01-592-4515 |
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