These are the highest quality US made crimpers available. Not cheap, but definitely the best professional quality. If you’re only crimping a couple pins, then the import 4 indent crimper SAT-004 is just fine, but it if you’re doing an entire panel of avionics, then this crimper is definitely worth the money. It crimps both standard and high density pins with the appropriate positioners. Made in USA. Note, this is the same tool sold elsewhere for $400-600.00! There are other brands, but not higher quality and better known than Daniels. Almost every airline, military branch and professional shop use these tools! Uses Positioners K13-1, K40, K41 & K42.