Hi,
read through the below post…i posted many comments…as i researched these micro files and the collets needed…the middle posts are kinda confusing…as i was confused🤣
bottom line, make sure you get the proper collet for the hammer handpiece/ reciprocating handpiece that you have…ie: that fits your handpiece…and fits the micro file shank…
also, i was told that the strip collet is not really designed for the use i was considering…