It seems like it can also be attached to trekking poles from other manufacturers, so please check the specifications (see the second image). *Please note that there may be slight variations in the specifications. Brand new, unused. There are 4 pieces in total, 2 pieces per bag. Please understand that there may be initial scratches or slight scuffs due to being stored by a private individual. Will be simply packaged. Price is not negotiable. Thank you very much.