AC1 Basis Trolley Adaptor / Chromatic Soprano, Alto, Tenor Chromatic Adapter AC1 for Sonor’s BT Basis Trolley Mobile Orff stand will work for any Sonor chromatic soprano or alto xylophone or metallophone. Basis Trolley sold seperately. Instructions included. The BT Trolleys and adapters do not work with any non-Sonor brands of Orff instruments or Global Beat instruments.
