1. The resistance tester is made of ABS material, which is and has a long service life. 2. Small size, light weight, easy to operate, test range 0.01~ 19. 9. 3.LED display with high precision can provide you with accurate resistance value. 4. Can test the resistance value of screws with such as EGO 510 808D M7 M 8. 5. The of use is very simple, just install the battery, toggle the switch, connect to the object to be tested and it can be displayed. : Resistance measurement range: 0.01~ 19.9 Test error: 1~3% Voltage measurement range: 0.01- 11.9V Power supply : 1.5V AA battery x 2 (battery not included in delivery) Display mode: LED screen (red) Product size: 69 x 49.6 x 26mm Material: abs colour: black Package Contents: 1 x Resistance tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.