Anso DVO Topaz Rear Shock Service Kits. Features: Compatible with all years of DVO Topaz air shock, may include extra seals that are not required for some variations of the Topaz Includes four main PTFE backup rings (two for the air can and two for the air piston) and a Schrader valve core rated to 800 psi Made in and imported from Ukraine Specs: Model:DVO Topaz Description:air can/damper service kit