service kit: other kits KIT 42853 Plunger guide kit, Ø30 mm Annovi Reverberi code 42853 In the kit Part numberDescriptionPosition 3660210Piston guide18 3660200Piston guide21 Fits these pumps Annovi Reverberi RTX 3 RTX 70.150 NRTX 70.200 NRTX 85.150 N