Aqua Comb Pool Cartridge Cleaner Tool - Filter Fin Depth 1-1/4" to 2-1/2 The Aqua Comb body is made of UV protected ABS plastic. The Comb and barrel valve are UV protected nylon. The Aqua Comb has a 304 S.S. 30 mesh screen hose seal to avoid clogs. Water pressure operating range is 35 lbs/sq.in. to 55 lbs/sq.in.