A good value HMS locking carabiner with massive smooth internal rope radiuses that are kind to ropes. The very strong hot forged construction gives the Aero HMS 25k N major axis & 10k N gate open strengths. The thick walled 7075 gate barrel that resist 6k N inward force for extra safety, this is particularly useful as the Aero HMS is well suited to group & centre use where it tends to get a bit of a bashing. The minimum rope radius is 11mm & rises to 11.3mm on the main rope bearing surfaces & the nose is a smooth keylock design the prevent snagging. The elongated shape is stable in the belay loop & minimises the chance of cross loading. Excellent value HMS locking biner Keylock nose Generous rope radius Deep gate bend for easy rope clipping Very strong construction