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.

• Size 4
• Durable aluminum heads and steel cables
• Transverse taper is versatile in flares, constrictions and parallel cracks
• Rounded edges for easy cleaning (smaller sizes are straight for better surface contact)
• Strength: 6 kN (1,349 lbf)
• Dimensions: 6.9/12.4 mm (0.27/0.49 in)
• Weight: 16 g (0.56 oz)