Meet the USED Folding Lock Knob — a compact, dependable adjustment piece designed to secure folding mechanisms with effortless precision. This pre-owned knob brings a simple, scalable solution to any setup that requires a quick, reliable lock without adding bulk. Condition note: This is a previously owned item with visible signs of wear typical for used hardware. It has been inspected for basic function and is sold as-is. A smart choice for budget-conscious replacements, DIY projects, or parts stocking where performance outweighs cosmetic wear. Why this Folding Lock Knob stands out Space-conscious folding design that tucks away neatly when not in use, helping you maintain a clean, portable setup. Tool-free, hand-tighten operation for fast adjustments on the move — ideal for photographers, technicians, and hobbyists alike. Versatile fit for equipment that relies on standard locking joints and threaded interfaces; easy to measure and verify against your current hardware. Rugged intent designed to endure repeated folding and locking cycles, making it a practical spare or replacement part. Practical use cases Great for securing adjustable joints on tripods and light stands, folding workbenches, portable tables, or any compact rig where quick, repeatable lock-down is essential. It’s equally suitable for DIY projects that require a reliable, removable locking knob without committing to a brand-new part. How to check fit and install Compare the knob’s diameter and thread pattern with your equipment’s locking socket to ensure compatibility. Clean the male threads and apply a light lubrication to promote smooth operation during reuse. Thread by hand to avoid cross-threading, then snug firmly—avoid over-tightening to protect the joint and the knob. Includes one folding lock knob. If you’re replacing a worn part or stocking up for future projects, this used option provides a practical, cost-conscious path to maintaining reliable equipment performance.