How To Win Mount And Blade I Purchased A Kingston Brass Deck Mount Faucet, Won't Fit 3CM Counter, How Can I Extend The Threaded Rods?

I purchased a kingston brass deck mount faucet, won't fit 3CM counter, how can I extend the threaded rods? - how to win mount and blade

I bought a packet of Kingston overstock.com restoration bronze faucet assembly think it would work with 3cm granite. The threaded rods extend through granite not far enough to get in touch ... Ideas of how to change it so that we can use this key?