1/4 To 1/2 Inch Tubing Clamp 50PCS Plastic Tubing Clamps Unadjustable Flow Control Shut Off Laboratory Hose Clamp Material: The hose clamp is made of high-quality PE plastic, with good toughness, not easy to break, and strong clamping force. Ideal for beer brewing, and wine siphoning process control. Widely used in medical equipment, analytical instruments, laboratories, pharmaceuticals, chemicals, environmental protection, and other fields Size: 35*20*25mm, inner diameter of pipe clamp: 6mm, inner diameter of large mouth: 15., 5mm, inner diameter of small mouth: 12., 3mm. PPS Adjustable Plastic Tubing Clamps| 5-8 mm Flow Control Hose Clamp Tube ( White) 4, 5 and 10... Material: plastic Color: White Size: 35*20*25mm Inner diameter of pipe clamp: 6mm Large mouth inner diameter: 15., 5mm Small mouth inner diameter: 12., 3mm Fits OD tubes 1/4 - 1/2 or 6 mm - 12 mm Package contains: 4 x flow control hose clamps. LUORNG 4PCS 6mm-12mm Pipe OD Stop Hose Clamp Flow Control Hose Clamp 6-speed adjustable pipe clamp: control the flow of liquid in the pipe, and can also stop the flow of liquid in the pipe.