Genuine OEM part For 2 3/4" all bars This cover is typically used on a 20-25" bar This is for the all saws and bars PLEASE NOTE: Consult owner's manual for proper part number identification and proper installation. It may look like the right part, but it may not fit your particular machine STIHL scabbards, you can keep your STIHL chainsaw and pole pruner better protected during transport and storage. Each scabbard is uniquely designed to fit a specific guide bar length, offering 100% coverage. And while we were at it, we made them even easier to install – giving the scabbards a funnel-shaped opening and improved clamping.