OEM Bach TR300H2 trumpet valve repair kit -- 3 springs, 3 top rubber washer bumpers, 3 valve felts, 3 valve guides, & 2 water key corks. See my kit ID# 273794280513 for the FH200 flugelhorn, TR300H trumpet, & others.
The difference between the TR300H & the TR300H2 is the H2 has rubber washers for the top cap and real corks. The TR300H uses a felt and rubber pads for the water keys.