Carolyn, I have climbed Lowe footfang duals for yrs and then went charlet grade 8 duals, and always was nervous about monos...now I am in M10 monos and love them...it is nice to have both depending on ice condtions, if mixed or alpine etc. If you want a pair that has both with and got a great review from Climing mag last yr, I have a brand new pair of Trango harpoons still in box with both mono and dual points included. Would sell for $85.