Product Review

For measuring size and thread pitch of Inch (SAE) American and Metric Size Nuts and Bolts Screws . Very handy for any workshop or toolbox. Nut Bolt Checker. Made of durable, lightweight plastic. Quickly and easily size bolts, screws, nuts and twist drills! Also features ruler marked with inches and millimeters. Gauge metric hex nuts and washers by holding under metric holes. Resists water, alcohol, oil and grease. Hard plastic. Red as shown in photos 1 and 2. Includes SAE and metric rulers for determining bolt and screw length. Assists you in determining SAE #4 to #10, 1/4" to 1" and 3mm to 22mm bolt sizes in addition to SAE #6 to #10 and 5/16" to 5/8" nut sizes. Flip the unit over to find a handy thread gauge for determining SAE 10 to 40 threads per inch and Metric .70 to 2.5 thread pitch.