Securely attaches to support stands, labframes, or any support rod up to 19mm (0.75") in diameter. Ultra Flex clamping system is extremely versatile. Unique, flexible arm can be placed in virtually any position or angle. System features 2-prong clamp head, 3-prong clamp head, spring clamp head, nickel plated flex arm in 12" or 18" length, cast alloy lab-frame connector and utility wrench. Mounts to lab-frames or support stands. Ideal for use in fume hoods.