MagiDeal Outdoor Rock Climbing Figure 8 Descender Rappelling Equipment 40KN / 8900lbs Material:Aerospace Aluminum Strength:40KN /8900lbs Color: silver Size (L x W): Approx 16.8 x 16.8cm / 6.61 x 6.61 inch Thickness: Approx 1.3cm / 0.51 inch