Thomas Valve Assembly Service Kit. Kit includes Valve Assembly Service Kit containing retainer gasket, valve plate, head gasket, oring, reed valves, cylinder sleeve oring, exhaust passage gasket. Kit is compatible with the first stage of Thomas LGH, GH, & TA models through 3/4 HP (TA-6102), and 175 psig models. Kit content services one cylinder. Depending on type of unit being serviced, you may need one or two kits (This item currently has a tariff surcharge which will be added to your order as a separate line item. Tariff surcharges are subject to change.)