Atlas Standard Height Stud Mount Accu-Shot Precision Monopod - The BT04-QK is our standard height Sling Stud Mount with QK01 Quick Knob. Additional Thumbnut installed to LOCK the unit into a fixed elevation. It is machined from 6061-T6 aluminum that is Mil-Spec Type III hard anodized. Elevation Range: 3.75 – 4.85in Folded Length: 3.95in Weight: 7.3oz