The Blue-Point JT64-1 Hone Stone Set is a high-quality automotive hand tool designed for honing engine cylinders. Made by the reputable brand Blue Point, this medium grit stone set includes 3 stones measuring 1 1/8". The 2-arm design allows for easy and precise honing, making it a valuable addition to any mechanic's toolkit. With a manufacturer part number of JT-64-1, this set is a reliable and durable option for completing engine maintenance tasks with precision and efficiency. New other. only defects packages are discolored from storage. Please see the pictures. Thank you.