If you are asking about HUT Americlassic double twist pen, item #0521 and Woodcraft Classic American double twist pen, item #123360 (or one of the other plating numbers), then I think the answer is yes. Both companies sell Berea kits. HUT sells bushings for this pen that fit Berea's B mandrel, which HUT calls the Ameroclassic mandrel. Woodcraft's bushings for this kit fit the standard 7mm mandrel, or the A mandrel. HUT calls for a 21/64 ths drill bit and Woodcraft suggests the letter O drill bit, which is a better choice. The letter O bit is the one I use. I purchase bushings for Berea kits that call for the B mandrel from Woodcraft because Woodcraft's bushings all fit the A mandrel. I hope this is not too confusing. Good luck.
Do a good turn daily!
Don