This is a heavy-duty articulating arm stand with 3inch (in diameter) O-ring focusing rack and sod base plate. Great for examining parts attached to a larger or awkward shaped item this articulating arm stand provides ultimate versatity without sacrificing stabity. This boom stand weighs about 60 lbs and comes brand new in a factory sealed box. A versatile articulating stand with clamp for covering large working area Articulating design for flexibity 3Inch (76mm) o-ring focusing rack 40Inch (1020mm) reaching-out length 24Inch (610mm) high pillar 15Inch x 10inch x 1inch (380 x 254 x 25 mm) sod cast steel base Type: Accessories