The Milwaukee M18FOPH/CSA is a chainsaw attachment to suit the m18foph-0 power unit. The chainsaw attachment has a side access chain tensioner for easy chain adjustment. A 254 mm bar with automatic chain oiling. And is capable of upto 150 cuts with a M18™ 8.0 Ah battery pack. M18FOPH/CSA chainsaw attachment 254 mm bar with automatic chain oiling Up to 150 cuts with a M18™ 8.0 Ah battery pack Suitable for use with 91 cm extension attachment for maximum reach Side access chain tensioner for easy chain adjustment Perfect for cutting down overhead limbs or branches