Convient assembly and detachment. No auxiliary tool needed for installation. Metal connector does not contact or scarch camera body and lens. Fast plate can be used directly on ARCA-SWISS tripod mount. Strap length can be self-adjusted. Camera can be locked in position, it keeps still when user is on the move, no need to grip the camera. Aviation Aluminum, light and stable,Safty lock,doubel safety. Package contents: Camera strap *1 Hand strap *1 Safety strap*1 Under-arm strap *1 User manual in English