Hydrofarm ACC4 Active Air Stainless Steel, 4" (Pack of 2) Duct Clamps, 4 inch Description Worm drive adjustable w/screwdriver for a super-secure fit. Made of stainless steel and is rust resistant. Two clamps per pack. Features: Stainless steel and rust resistant Worm drive adjustable w/screwdriver Two clamps per pack Secures ducting tightly in place Classic "hose clamp" design Product Details: Material: Stainless Steel Brand: Hydrofarm Item Dimensions LxWxH: 4.4 x 1 x 6 inches Color: Stainless Steel Style: Classic Product Dimensions: 4.4 x 1 x 6 inches Item Weight: 2.39 ounces Manufacturer: Hydrofarm, Inc. Item model number: ACC4 Is Discontinued By Manufacturer: No