We actually have a few of the CRLB Lamkin Crossline for the Bubble shaft with a .680 core. They were actually in our pro shop. I will get a few moved over to our main warehouse inventory, which should enable you to order one online under the code CRLB. It may take a day for them to show as available, but we will try. If not, you can simply call into to our pro shop and they can process an order for you.