With built-in screw fittings in the base, the Dinsmores Telescopic _Spiral Bank Stick can deeply penetrate the ground and ensure security. _As well, they are a full metal design featuring a thumb screw which _allows anglers to adjust the height.Standard screw top fitting that accepts most common attachmentsBuilt-in screw fitting in the baseDeeply penetrates ground and ensures secure footingFull metal designThumb screw to adjust heightSize: Small / 16 - 32 inches