Foley-Belsaw 4" x 1/8" Chainsaw Grinding Wheel with durable 46 grit construction. Specifically designed for Foley-Belsaw model 550 Sharpeners, this precision wheel ensures professional-quality results every time. Featuring a 1/2" arbor and resin bond for enhanced performance, this essential tool will keep your chainsaw cutting efficiently. Part number 3700033.