AD1 Basis Trolley Adaptor / Sop/Alto/Tenor Diatonic Adapter AD1 for Sonor’s BT Basis Trolley Mobile Orff stand will work for any Sonor diatonic soprano, alto, tenor, xylophone or metallophone. Basis Trolley sold seperately. Instructions included. The BT Trolleys and adapters do not work for any non-Sonor brands of Orff instruments or Global Beat instruments.
