Product Details
The Mastercool 91290 is a heavy-duty, double-ended universal valve core tool engineered for quick removal and installation of standard and GM R12 large bore valve cores across automotive A/C and commercial refrigeration systems. Built with a knurled dual-drive aluminium body and hardened alloy steel shaft, it provides service technicians with maximum torque and slip-resistant handling during routine valve maintenance and recovery operations.
Technical Specifications
| Brand | Mastercool |
| Part / Model Code | 91290 (MSC91290) |
| Product Type | Universal Valve Core Remover / Installer |
| Tool Design | Double-Ended Dual Drive |
| Valve Compatibility | Standard & GM Large Bore (R12 / R134a Cores) |
| Body Material | Knurled Aluminium Body with Steel Shaft |
| Country of Origin | Taiwan |
| Product Weight | 23g (0.05 lbs) |