Product Description Time-tested passive pro, Stoppers are a direct link to the original chocks that started the clean climbing revolution. Black Diamond Stoppers are an essential for every trad rack, designed with a transverse taper that permits sideways placements in flares and shallow seams. Anodized by size, they're quickly identifiable and rounded edges make for easy removal. Each Stopper is equipped with a durable, galvanized steel cable. Country of Origin: Taiwan Stopper #1 7 g 80% Aluminum, 20% Steel Stopper #2 8 g 80% Aluminum, 20% Steel Stopper #3 15 g 80% Aluminum, 20% Steel Stopper #4 16 g 80% Aluminum, 20% Steel Stopper #5 18 g 80% Aluminum, 20% Steel Stopper #6 32 g 80% Aluminum, 20% Steel Stopper #7 37 g 80% Aluminum, 20% Steel Stopper #8 37 g 80% Aluminum, 20% Steel Stopper #9 51 g 80% Aluminum, 20% Steel Stopper #10 43 g 80% Aluminum, 20% Steel Stopper #11 51 g 80% Aluminum, 20% Steel Stopper #12 58g 80% Aluminum, 20% Steel Stopper #13 71 g 80% Aluminum, 20% Steel