Service Repair Kit # 60135-2510 for the Fleck 2510 is Obsolete.
The Nut Driver, 12664, and socket adapter, 16906, and 7/16" socket, 12665, are all common tools most people already own.
The "Seal Hook", 12874, is easily "created" with any stiff piece of wire, or metal coat hanger.
The "Puller", 13061, can be replaced by your fingers, with the help of a screw driver and perhaps needle nose pliers.Only the "Stuffer Tool", 11098, is of any "use" in the kit.
It really makes installing the Seals & Spacers a lot easier. Although, even that can be done without special tools.
see; Stuffer Tool, PN 11098