The product is a pair of Accu Trak Tool knurling wheels with a 16 TPI design. The dimensions are 1 1/4 inches in diameter, 1/2 inch in width, and 1/2 inch in height. These tools are designed for use in various industrial and business applications that require precise and accurate knurling. The brand's reputation for quality and reliability ensures that these tools will be a valuable asset to any workshop or manufacturing facility.