ITEM NAME:Handy & Screw Gauge Diameter Length Thread Pitch Measure Tool Black Description: Handy measurement tool for accurately identifying different types of screws/bolts/ nuts about their diameter, size, pitch, and length Especially designed to measure bicycle screws/ bolts Measurement Range: M3 M4 M5 M6 M8 M10 75MM Made of very durable hard acrylic Do it yourselfers, handymen, and mechanics can save time, money and a trip to hardware store Specification: Material: Acrylic Size: 84x42mm/3.3x1.65 inch Color: Black Package Includes: 1 Piece Screws Measurement Guage SKU: DMO0013512454040329.Color: Black.