OREGON OR534-516-CBN – CBN Grinding Wheel, 5-3/4″ x 5/16″ x 5/8″ “list-style-type:square”5/16″ CBN Grinding Wheel 5-3/4″ x 5/16″ x 5/8″ Grinds 3/4” Saw Chain Product Type: Chain Sharpening Category: Grinding Wheels >Oregon is the world leader in chainsaw guide-bars. It brands bars for many major chainsaw manufacturers & sells Oregon-brand in the replacement market worldwide. Oregon chains are used as original equipment by 90% of the world’s chainsaw manufacturers & by most of the world’s professional Loggers, farmers, & homeowners. Oregon also produces replacement mower blades, belts, & several other aftermarket replacement parts for power equipment.