I used this during practical training in my student days, but I haven't actually used it in clinical practice. There are no problems with its use, and the needle doesn't slip, nor does the lock come undone. It is unsterilized, but I have wiped and disinfected it with alcohol swabs. *Regarding the condition, this is based on my personal opinion, so please be sure to check the photos. Please consider purchasing this item with the understanding that it is a used item and has been stored at home. If you are concerned about the details, please refrain from purchasing. We do not accept claims or returns. You can buy it immediately. YDM, needle holder, Boynton, diamond, Hegar, Mathieu, medical, suture