FJC 2674 JRA Valve Core. FJC 6011 R134a Manual Coupler Set. FJC 2731 Syringe Oil Injector. FJC 6040 R134a/R12 Side Can Tap. About JB Tools. SECTION 6 - ACCURACY OF BILLING AND ACCOUNT INFORMATION. We reserve the right but are not obligated, to limit the sales of our products or Services to any person, geographic region or jurisdiction.