INSIZE 4130-4 Metric Thread Plug Gage, M4 x 0.7 mm ship03 Red light can be used

Red light can be used for sending signal and the strobe mode can make you get noticed when you need help in an emergency

Single Signal Selectivity: better than 10dB Single Signal Selectivity: better than 10dB External Headphones: Diameter 3

avoid collision or falling

Please kindly check the model number "Axxxx" on the bottom of the laptop before you purchase

INSIZE 4130-4 Metric Thread Plug Gage, M4 x 0.7 mm ship03 Red light can be usedINSIZE 4130 4 Metric Thread Plug Gage, M4 x 0. 7 mm Metric thread plug gage, m4x0. 7. Product Features Supplied with go and no go gages together Class 6H. Standard Iso1502 Supplied with manufacturer inspection certificate Made in China