Hanson Chien Presents SBD (Sponge Ball Dropper) by Ochiu Studio (Black Holder Series) - TrickWelcome to the second project of Black Holder Series from Ochiu Studio! SBD is the world's first sponge ball holder. SBD can hold up to twenty 1 inch sponge balls, or one 4 inch sponge ball, the dropper can be clipped on a belt. SBD's rotatable head design allows users to clip the unit anywhere on the belt. More user friendly for both right handed and left handed performers. SBD's axis design on the securing clip allows a certain degree of movement,