One solid rubber antenna strain, two piece mold, last one that I have for sale. Embossed SAILOR ISOLATOR A\S S.P. RADIO DENMARK. About 24 inches long with a 3/4 inch diameter. In used condition with some copper wire corrosion on the ends. Has no stretch and is pretty solid. Not very common, first ones that I have ever seen, they also come with no end fin's. Sailor is a marine radio company in Denmark. $30 gets it shipped via USPS priority with tracking in the USA, may be a bit extra to other countries. PayPal gift option preferred, checks or m.o. o.k. too. Satisfaction guaranteed as always.