Categories | Grivel K8G Sigma Twin Gate Carabiner £9.90 The Grivel K8G Sigma Twin Gate is a large D-shaped carabiner with a wire gate and a key-lock bent gate. Forged Twin Gate (Wire + Bent Gate) Check stock and priceGrivel K8G Sigma Twin Gate CarabinerGrivel K8G Sigma Twin Gate Carabiner on other UK sitesGrivel K8G Sigma Twin Gate Carabiner on other UK sitesGrivel K8G Sigma Twin Gate Carabiner on USA sitesGrivel K8G Sigma Twin Gate Carabiner on USA sites | Brands |