The Norton 32A Grinding Wheel is a high-quality abrasive wheel designed for metalworking applications. With a 7" diameter and 1" thickness, this wheel features a recessed side measuring A3" x 1/2". The wheel is designed for use with a 1-1/4" arbor hole size and has a maximum speed of 3600 RPM. Made in the USA by the reputable brand Norton, this grinding wheel is a reliable and durable tool for precision grinding and finishing tasks in various metalworking operations.