Aluminum magnesium alloy constructed hand ascender provides firm grips in compact shape, widely used as a protective assistant during working, climbing, caving and so on outdoor sports. Feature： Aluminum magnesium alloy with reliable strength. Max bearing capacity: 140kg / 308lb. Fits single ropes: 8-13mm. Steel thorns design make it firm for grip but not damage the rope. Holes in the upper and lower part for carabiner or other gear to connect. Widely used as a protective assistant during aloft working, climbing, caving and so on sports. Specification: Material: Aluminum Magnesium alloy Right hand: Blue / Orange / Black / Red (optional) Left hand: Red / Orange (optional) Bearing capacity: 140kg / 308lb For rope: 8-13mm Size: 22 * 8.6cm / 8.6 * 3.3in Weight: 239g / 8.4oz Package weight: 248g / 8.7oz Package List: 1 * Hand Ascender