NAPPED POLY PRO ANODE BAG 10 X 21. NAPPED LINER INSIDE THE BAG CONTIBUTES TO A SMOOTH PLATED FINISH. FITS 2.5" X 6" 18" ANODE BASKET. ANODE BAGS SHOULD BE THREE ( 3 ) INCHES LONGER THAN THE BASKET. CALL FOR ADDITIONAL SIZES. AVAILABLE IN 1" INCREMENTS.