Hydro Crunch 8" Stainless Steel Ducting Clamps for Ventilation Four Clamps - (TWO Sets of 2) Offered for sale are sets of FOUR Hydro Crunch 8-inch Stainless finish hose clamps. Each sale is for TWO packages of TWO clamps (four hose clamps) Hydro Crunch 8 in. Adjustable Metal Worm Duct Clamps can be used to attach aluminum ducts to other aluminum products such as inline fans, booster fans, elbows, and pipes. They are ideal for use with semi-rigid or rigid aluminum ducts. Worm drive adjustable with screwdriver or hex driver for a super-secure fit. Stainless steel finish and rust-resistant. The clamp adjusts from just over 8 inches down to about 7.5 inches.
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