I have three tube assemnblies available. One is a wide-field Celestron 102mm with tripod block and 1 1/4 inch diagonal. the second is a 120mm Skywatcher with a 1 1/4 inch adapter.The third is a 127mm f/9 originally brought from ITE. It has mounting brackets and its focuser is 1 1/4 inch. The prices are $250,$300, and $350 respectively.