This heavy-duty galvanized steel worm gear clamp from Dundas Jafine is ideal for securing rigid aluminum ducts measuring 10.15 cm. Made from durable galvanized steel, the clamp's worm gear mechanism ensures it remains firm once tightened to hold ducts securely in place. Its size and materials make it a sensible option for duct installers handling semi-rigid or rigid aluminum ductwork.

• Dundas Jafine Metal Worm Gear Clamps are ideal for use with semi-rigid or rigid aluminum ducts

• Made of heavy duty galvanized steel

• Size: 4\" (10.15 cm)