Leki photosystem aluminium trekking pole aergon photosystem features just like the photosystem carbon the photosystem alu with its fixture details will win over any photographer sharp and blur free pictures with the aergon photo adapter for easy camera attachment the speed lock external adjustment system rounds off this solid trekking pole specifications 181614 mm 3 piece hiking photo knob and speed lock system carbide flex tip with rubber pad and ultra sonic finish th