Please note: Actual product slightly in color or appearance, but this does not affect functionality. We appreciate your understanding! [Premium Aluminum]Made from aircraft aluminum , strong and . [CNC Technology]Machined by CNC technology to high accuracy. [ Finishing]Processed by anodization, rust resistance and resistance. [Tested for Cracks]This tool assist you in testing the hydraulic circuit inside the drum and identifying cracks in the drum. [Easy to Use]Simply place the tool into the drum, use the air nozzle in each marked hole and blow compressed air into the drum to check for leaks. [ Fit & Dedicated Support]Engineered with a snug fit to an airtight seal for accurate leak detection. Avoid forcing the tool. Color: Picture Color Material: Metal Package Contents: 1*Reverse Drum 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.