Sponge Holder SPGSponge Holder SPG Gets way down inside without gouging! The special hardware attaching the sponge protects your piece and can easily hold your favorite sponge in place. This sponge holder won't bend or flex under stress. Made from hardwood and 14 in length, you have complete control of where that sponge and handle are. Our ceramic sponge is included, attached by special hardware that will firmly hold any sponge.