King Trumpet tune-up kit, easy to install. Fits Older King's 600 series (before 491500), Cleveland, & Silver Flair with top action springs (springs are not internal to the piston). Email me with your model in unsure. Not all soft parts fit every instrument. Not for newer Silver Flair trumpets with the valve guide & spring internal to the piston, see my item ID# 16127 for that kit. Contains springs, valve guides (may come white or black), stem felts & cork washers, finger button felts, top cap felts, & self adhesive water key pads. If you prefer natural cork for your spit valve, contact me, no prob.