Mastercool 91490 Standard Valve Core Remover/Installer Automotive/HVAC (1/4" FL). Sturdy ball valve design controls refrigerant flow with 1/4 turn of the valve lever. Lever position also gives visual indication of whether valve is opened or closed.
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Wed May 03, 2006 02:06:55 PM
"I recommend this tool to anyone in the air conditioning business. Yeah, it costs a little more money than your basic shrader key, but when you've pulled a system down to a 50 microm vaccum for three hours, then realize you forgot to put your shraders back in the service ports after brazing, youll be glad you spent it. Plus it has a magnetic tip that really holds onto shraders, and its a lot stronger than those cheap little brass shrader keys."