Standard Dogbone 12Cm 6Pcs. Black Diamond Standard Dogbone 12cm provides workhorse performance.. Whether a part of your everyday climbing kit or hanging from your project outside, the Black Diamond Standard Dogbone provides workhorse performance. The beefy construction resists abrasion and is easy to grab, while the rubber Straitjacket insert in the bottom keeps the bottom carabiner secured for easy clipping. 6-Pack of Standard Dogbone 12cm