1/4 pitch sprocket to fit the Makita 5012b electric chainsaw - 1/4 Pitch Sprockets, Carving - Chainsaw & Tools | Log Home Store Building Supplies and Tools
Amazon.com: Makita 026-224-010 Rim Sprocket 3/8" Replacement Part : Tools & Home Improvement
Electric Chain Saw Replacement Part 6T Sprocket for Makita 5016 - AliExpress