This is the world's most popular "Floss on Wheels" setup. Designed primarily for the Econo FlossŪ, Mega FlossŪ, Floss Maxx machines. Many rental operators prefer the non-metallic bowl on their Floss BossŪ, Econo or Mega FlossŪ. 20" x 20" (50 x 50 cm) stainless steel spacer included. Bubble sold separately. Machine and bowl sold separately.