A/C Repair Ends Aluminum O-ring Assortment – ACRK-2 contains an assortment of A/C condenser aluminum O-ring repair ends in 3/8″, 1/2″, 5/8″, and 3/4″ diameters to be used with the SPLICE-LOK and KLEDGE-LOK A/C repair systems. Ends include external male, internal male, and external female. Fast, economical tube and hose repair. Repair pinhole leaks, cracks, kinks, and rub throughs with SPLICE-LOK or KLEDGE-LOK in air conditioning, coolant, transmission, oil, or fuel lines. Not for use in brake or clutch systems.