this is a keychain display with a bowl and sign holder, it is adjustable can be use as just a bowl, with or without sign, can also put as many display racks on as you fell like. you need 608 ball barrings if using the racks (1 for each rack). the sign holder holds a sign about 96mmx143mmx3mm and needs the adapter to hold in place. adapter can be turned upside down and placed in rack or bowl for a flat top look instead of using sign. sign need to be glued to sign top. and there is a second top without sign.