Chainsaw Sprocket for Husqvarna 350 31 340 345 346XP 350 445 450 450E Bearing Included Fits the following Brands Models: Husqvarna 31, 340, 345, 346, 346XP, 350, 445, 445E, 450, 450E, Jonsered 2145, 2150 , McCulloch PM5000 .325" Pitch 7 Tooth