Back on 26 May 2009 I posted my Techniclick collection. At the time there were 34 different pencils. Today we add number 35. I am adding a .07mm PD107RD in green. RD stands for Razzle Dazzle. I have a green RD already but it has a black side lead advance button. This new one has a blue button. These are good pencils and have always received good reviews but the search must continue.