We are currently working on the FP950 series Fountain pen and should have it ready with in the week. It will feature a .375/9.3mm tube for the lower body of the pen. The upper cap will be the same components as the Fp1000 with a 7/16 upper tube. The FP950 will have an outside finished diameter of .425/10.8mm for the lower pen pody. tubes should be painted prior to assembly.