Low Speed Straight Hand Kit Latch Bur New (Pack of 5)

I ordered this product due to needing further denture adjustment handpieces They initially worked fine. however with in a year of wear and Asistina and autoclave sterilization,, the latching mechanism gave out. It either wouldn't open or wouldn't hold bur. Given for the price I wasn't that upset. I'm not sure if it made some difference if I had latch open or closed in sterilization processing. I was able to get some handpieces unstuck with W-D 40 and a wrench. I use for lab only now.I have ordered the all metal straight handpiece and it seems to work much better ( but not like my Kavo straight handpiece but hey it's @ 1/30th the price!)