Since 1971, Black Diamond has been refining the exceptional geometry of its Stoppers to provide micro-protection that stays put. Their bomber performance ushered in the age of clean climbing and has made them a staple of every climber's rack for nearly three decades. Rounded corners assist "cleanability," reducing the possibility of the nuts getting caught on irregularities inside cracks.

• Entire collection of original Black Diamond stoppers
• Transverse taper eases placements flares and constrictions
• Rounded edges helps clean
• Heads: aluminum
• cables: steel
• Placement Range: [4] 6.9/12.4mm, [5] 8.4/13.5mm, [6] 10.2/15.5mm, [7] 11.7/16.3mm, [8] 13.5/18.3mm, [9] 15.2/20.8mm, [10] 17.3/23.4mm, [11] 20.1/26.7mm, [12] 22.9/30.5mm, [13] 26.4/35.1mm,
• Strength[4, 5] - 6kN, [6-13] - 10kN
• Includes: Black Diamond Oval Wire Carabiner