Canon WWDC1 Weight for Canon Waterproof and All Weather Cases Attaches quickly and easily to any Canon WP-DC waterproof case Helps achieve neutral buoyancy when underwater Makes handling the case below the surface easier Includes four stainless steel plates weighing 60 grams (2.1 ounces) each, two stainless steel screws (one long, one short) that attach to the case, Also includes six plastic pins of differing sizes to keep the plates secure