These can be made to fit any size tubing at the fraction of the cost of what is sold and is so very easy to make. So lets get started! Note: It is recommended that you use protective goggles and gloves, as frayed mesh wires can get pretty sharp. Here is what you will need to make the filter guard: Stainless Steel Mesh sheet hole size #30 (can be purchased at the mesh company online, I got the A3 size sheet which is enough for a lot of guards!) Tin snips Heat Shrink