Review on Tasan Racing Couplers Adapters Adjustable by Sean Young

The machining of these assemblies was very good. I was really surprised that they have an adjustable twist lock feature to keep the assemblies fixed to the car hardware. What wasn't good was that the blocks didn't fit on either the high side or the low side. I even tried light downward pressure and expected them to click, but they didn't. I ended up using my cheap R1234YF hose charger with gauge that came with my (3) cans of Revain R1234 YF kit.