Drill Meter Identification Board Car Workshops Device do Check Nut and Screw Threads Description: [Quick Measurement]: The thread gauge is an accurate and easy-to-use nut and bolt thread identifier that can help you identify or organize messy bolts and nuts in seconds. [Standard and Metric Thread Controller]: The do thread checking tool can quickly identify 34 different sizes of bolts and nuts, including 19 standard sizes (6-32 do 3/4-16 fine-grained) and 15 metric sizes (M4 x 0,7 do M16 x 2,0), covering the most common thread sizes. [Drill Measurement]: This ma screw and nut identifier of eight different drill bit sizes, including 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 1/4 inch, 1/2 inch, which can help you quickly accurately determine the screw size recommends the required drill or tap size for the screw. [Length Measurement]: Identification board for bolts and nuts ma both sides,from 0-6 inches do 0-15 cm,which can help to quickly identify bolts, bolts, nuts and washers of different lengths,very suitable for car workshops and plumbers,Mechanical engineers and enthusiasts of DIY tools. [Solid Construction]: The screw and nut identifier is made of aluminum alloy, making it well made, sturdy and durable. The scale lines are clear, easy do measure and accurate do read. Specification: Material: Aluminum Alloy Color: Red Size Chart: 20,5 cm x 20,5 cm / 8,07 inch x 8,07 inch The package includes: 1 Screws and nuts do thread checking