Just thought I'd pass on this info about replacement toggles for the older Lee "O" Challenger press. I broke one of the aluminum toggles on my 4-5 year old "O" challenger press for the third time last week. Curious, I phoned Lee to inquire if the steel toggle system on the newer breechlock 'O' press would work on my older model one. Answer was YES, but needed 6 parts to do a replacement. Cost for these parts and shipping for them was $14.50 These parts solved the only problem I've had with my Lee press.