inexpensive spring clamps for fuel lines

[JustEnough]

Has anyone tried some of these? I think 8mm would fit my 5/16" poly fuel lines:

http://www.ebay.com/itm/6-15mm-10-20Pcs-Spring-Band-Type-Durable-Fuel-Hose-Clips-Silicone-Pipe-Clamp-/400760248219?var=&hash=item5d4f2c179b

[Trackburger]

If you have a Harbor Freight near you you can get a kit of assorted sizes of those things for a few bucks. I have them on my bikes and have had no issues.

[tri again]

I've noticed that some tygon, yellow or blue lines fit perfectly without clamps
and I loop them down to act as a sediment trap.
However, for some reason, either alcohol gas or uv rays will make them jelly and loosen up...
so clamps are a good idea.
No thoughts on clamps as all the 1/4", 7mm lines etc etc have different outside diameters.