Exactly what it says. This kit allows you to use Pin Type Couplers on your E-58H unit with either 21856 or 22144 NPT hoses. You do NOT have to use the E-58H style that are prone to failure. This is used when replacing an E-47, E-57, or E-60 with an E-58H. As pictured, the kit includes: (2) Pin Type Couplers, (2) SAE>NPT Adapters, and (1) Wiring Adapter 15912. THIS IS NOT FOR USE ON AN E-58H unless it is replacing an earlier unit. Click on Related for the 08206 Meyer E-58H Coupler Kit.