Featuresr clamping distance on surfaces ranges from 1cm to 20cm meeting your need to the largest extentr fix on bridge piers various kinds of handrails and so on with strong screwsr the mount is adjustable by means of rotating the screwr rubber plastic dip coated claw handle to secure a good grip for fishing rods and to avoid abrasion to the rodr easy to install just need your handsr all hardware of this tool are included