AS stands for Advanced Safety as the net has a net trick up its sleeve - more about that tomorrow. The unique bow effect of having a draw cord that goes all the way around the net frame creates a lever effect to set the tension in the arms extremely easily. No fighting with the arms. No fancy mechanisms to break.  Arms are supplied by Century. The net is reinforced to extend its life. There's a 2 piece, 24mm carbon handle with screw thread joint and a screw in spike on the butt end. Supplied with a heavy duty case.