Industry standard 5/8" x 11" mounting threads. Use as a lightweight, yet sturdy, base for your laser level. Hollow for optical and laser plummet instruments, flat head design makes setup fast, plumb bob hook, Quick clamp, and hinge stops. Electrostatically powder painted castings for a durable and long-lasting finish. Extension legs adjust quickly and securely, 63"H open, 38"H closed. Heavy-duty poly-webbing shoulder strap.