K2 Climber 63 Set, aluminum clamp for attaching the K2 SingleRail 63, set consists of: T 1 Climber 63 (2001334), aluminum EN AW-6063 T66, T 1 cylinder head screw with underhead serration M8x30 (2001730), stainless steel A2, T 1 M K2 slot nut with mounting clip (1001643), stainless steel and PA