The Petzl Attache is an asymmetrical screw-lock carabiner specifically designed for belaying and has a compact and lightweight design to keep the weight down. The carabiner weighs just 56g and has an H-profile cross-section that provides strength and optimises the strength-to-weight ratio. The Attache&';s round basket makes the rope slide more smoothly and prevents abrasion during securing. Technical Details : Material: aluminium Weight: 58 g Breaking strength: 21 kN Gate opening: 23 mm