Question: What type of axle do you use in VMAR ARF products?
Answer: We have used two main types of axles.
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a) An axle that requires a wheel collar outboard of the wheel, and
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b) An axle that does not require a wheel collar outboard of the wheel.
The latter is currently our standard axle and consists of a hardened machine bolt with a socket head and depending on the configuration, related fastening hardware such as retaining safety nut(s), washer(s) and in many cases one wheel collar. This axle has been found to be extremely strong, easy to install and most importantly, it is extremely resistant to vibration loosening of either the axle or the wheel. | 
