When shopping with EPOOLS if you buy more the one product the freight may stay the same or increase slightly it would not double in cost so save and buy extra goods.
One end of this connector has a 6mm rubber gland which will be able to take cable up to 6 -7mm in diameter as it can be stretched. it can also take a smaller size cable say for example a 4mm cable as when the gland nut is tightened it causes the rubber gland to shrink around the cable thereby forming a waterproof seal.