Oetiker 17700340 Stainless Steel Worm Drive SAE Type "F" Hose Clamp ( Irrigation), Clamp ID Range 13 mm (Closed) - 27 mm (Open) (Pack of 10): Amazon.com: Industrial & Scientific
19mm Poly Clamp - Irrigation Warehouse Group Pty. Ltd.
2 Inch Sprinkler Clamp
Amazon.com: STEELSOFT Heavy Duty High Pressure 1/2 inch Hose Clamp Size#6, 1/2-3/4"Adjustable Worm Gear Drive Metal Hose Clamps Stainless Steel Pipe Clamps, Fuel Injection/Sprinkler/Drip Irrigation, 12 Pack : Automotive
Amazon.com: Rierdge Irrigation Hose Clamp 1/2" Inner Diameter Stainless Steel Double Coil Spring Water Pipe Clip for Garden Irrigation, 60pcs : Patio, Lawn & Garden