• Minimum Hole Size (Inch): 1/16"
• Maximum Hole Size (Inch): 1/2"
• Number of Holes: 29
• Gauge has 29 measuring holes for determining twist drill sizes from 1/16" to 1/2" in 1/64" increments
• Shows drill sizes in inches and decimal equivalents
• Made of high quality steel
• Satin chrome finish
• Offer a quick and accurate way of checking drill and rod sizes