Lee safety Prime is a new priming system for small and large primers, never touch the primers from box to shell. Used with 2006 and newer breech lock Challenger, turret presses, classic turret press, breech lock classic cast, classic cast press, and auto breech lock Pro press. Specifications: - fits: Lee presses made after 2006 that have the lever Prime system (lps) - function: upgrade the priming system - material: plastic. Note: depending on die configuration on the turret press, the auto disk riser may need to be purchased to provide adequate clearance for the Lee safety Prime