The PathFile is a rotating, flexible nickel-titanium instrument suitable for root canal opening preparation/ making a glide path. PathFiles can be used prior to any NiTi rotary file system - a "glide path" needs to exist before introducing a Rotary NiTi file. Its use reduces the risk of e.g. ProTaper-file rupture, and is at its best in narrow and curved channels. Unlike with conventional steel file, when working with PathFile, the original shape of the root canal is maintained. PathFiles are available in three sizes 013, 016 and 019 and three lengths 21, 25 and 31mm. Operate the handpiece at 300 rpm. Prior to PathFile, establish patency with size 8, then 10 Hand Files, and only then create glide path with PathFiles 1, 2, 3 (.13, .16, .19). Sterile blister package of 6.