Here we have five types or generations of the Pilot B2P pens. On the left are the original ones that use the G2 refills and are still sold in all your local stores. Top right is another original pen then two B2Ps from England. Next are the seven Petball B2Ps from Jetpens. These use the smaller refills and all are black ink. Bottom row are the griped B2Ps that also use the smaller refills but in colors. Last are the five new B2Ps from Staples. The barrel and ink color are the same. These use the G2 refills. Hard to believe there are so many. Add all five generations to your collection.