Description: Narrow-leaved designed to measure the external and internal threads - even in small holes. Product name: Thread gauge Material: 45 cold-rolled steel Unfold Length: Approx. 108mm/ 4.21inch Folded Lenngth: Approx. 67mm/ 2.64inch Color: Silver Package Includes: 1 Piece Screw Pitch Gauge Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement