We all know that if the systems don't flow, they don't work . . . which means replacing nozzles before they become fouled and then rebuilding them with new innards - balls, springs and filters. This wrench set is an ideal tool for disassembling and reassembling the slimline nozzle tips during the rebuild process.
The blue-handled socket accepts the threaded stem at the base of the nozzle. The orange-handled wrench has a more shallow socket that accepts the tip with the orifice. Just turn the wrenches in the opposite direction or each other, and the nozzle comes apart or together.