Johnson Level & Tool 40-6340 5/8-Inch by 11 Threaded Flat Head Tripod Lightweight, durable aluminum construction with extendable legs Adjustable working height: 41.75" to 67" (106 to 170cm) Quick connection for lasers with 5/8"  11 thread Attached chains prevent legs from sliding and heavy duty carrying strap makes for easy transport Feet have sharp metal points for use on uneven outdoor terrain and retractable rubber covers for use on slick surfaces such as flooring and concrete