Husqvarna 550xp Trio brake model. This unit is identical to the standard 550xp chainsaw but incorporates the trio brake from husky. All other specs are the same but has the additional chain brake safety. Saw does show some signs of wear but is in otherwise good shape. Starts right off and runs great with no issues. Ran off of the Husqvarna XP pre mixed oil more recently. Includes the saw as you see it in the pictures with used bar and chain and a scabbard which is not pictured. Chain has been used since being sharpened but should still have some life before needing to be sharpened again. Used a .325 file. Have seen these saws support up to a 24” bar even though Husqvarna states 20”. Let me know if you have any questions!