... -135cmAnti-Shock on/off mechanism Easy lock system Professional-designed Hand-Grip for HikerCompact wrist strap Strong and light to use Dia ... :EVA , rubber ,cork ,plastic ,woodStrap:Adjustable strap can support the hand to reduce fatigues and provide more power to your ... hand than simply gripping on the poleShaft :6061 alu ,7075 alu ...