INFICON - Leak Detection Pro KitINFICON Leak Detection Pro Kit 724 712 G1 Get even more out of your leak detector with the Leak Detection Pro Kit. Designed to help you leak check like a pro, the new Leak Detection Pro Kit (PN 724 712 G1) comes with a needle probe, rubber I Tip, brush I Tip XL, spare filters and extra rubber refills. Use the needle probe to diagnose problems in unique applications like VRF and other systems that have hard to access refrigerant lines, and even check