Size: The inner hole diameter is 0.43 inch (10.9 mm), which is suitable for clamping and mounting 4AN fuel lines. Material: The clamp is made of 6061-T6 aluminum alloy. Function: It is used to secure and separate transmission lines, helping to keep your project clean and organized. Application: The fuel hose separator clamp is widely used for fuel hoses, oil lines, brake lines, gas lines, water pipes, and more. Note: Five sizes of hose mounting clamps are available. Please measure the OD of your hose before purchasing.