Euphonium (euphonium) player Glenn Van Looy's signature Adjustable Bottom Caps for euphoniums. These are in almost new condition and are very clean. This product is compatible with German-made Besson euphoniums. It is installed on the 4th piston only. The bottom cap can be disassembled, allowing you to reduce the weight and change the resistance. For more details, please refer to the manufacturer's website below: https://www.heavybottomcaps.co.uk/glenn-van-looy-abcs The new price appears to be £78.95 + shipping from the UK £17.82 = £96.77 (approximately ¥19,187 as of July 29, 2025). #Euphonium #euphonium #euphonium #HeavyBottomCaps #BottomCap #Besson #besson #glennvanlooy #Glenn