HIPA Felling Dog/Bumper Spike (Inner/Outer) with Mounting Bolts Screws for STIHL 044 064 065 066 MS440 MS640 MS650 S660 Chainsaw (5 Point) Fitment models: STIHL 044 064 065 066 MS440 MS640 MS650 S660 Chainsaw Package include: 1 x set (inside and outside) felling dog, 4 x mounting bolts, 3 x mounting screws