
Measurements and tests have shown that these two models offer very good value for money. Has already been used to check AC clutch play on a machine so it's already paying for itself. All you have to do is take good care of them, lubricate them, clean them, etc. and they will last a long time. I have an old 1 meter bag that I keep mine in, each individually wrapped and it has held up well over the years.

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