Tales of a Woodwind Repairman 7.9.20: This is what was called the “Tea Kittle” register tube that Selmer had for a while…. It had two holes in the register pip.. both oblong… this really helped clear up the A above the staff on both altos and tenors… really good for the tenor…. I do not know how many saxophones they made with this register pip but the ones I have played really seemed to work great….