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Universal V-Jaw Duct Damper Lever
A 110 mm replacement handle for a round-duct balancing damper whose stamped lever has snapped off. The 28 mm hub has a 90° V-jaw that takes any 5–10 mm round or square damper shaft, clamped by an M4 set screw in a heat-set insert. A rib along the top lines up with the damper blade so you can see its setting, and a 4.5 mm tip hole lets a #8 sheet-metal screw lock the setting to the duct.
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