What you might try, if you really want to sell something, is to include info about each so that guys that don't know what each fits won't have to do all of the leg work. Might roust out a potential buyer quicker.
And, put a price on them. If someone doesn't like it they either won't buy it or will offer you something different if they don't immediately sell.
LV-1 - 8 oz. to 1.5 lbs.
Factory adjusted to break at 10 oz. to 12 oz.
ERV-3 - 4 oz. to 1.25 lbs.
Factory adjusted to break at 5 oz. to 7 oz.