Description: Size: Width: 59mm/2.32inch Length: 39mm/1.54inch Hole Diameter: 11.5mm/0.45inch Carbon steel casting, long-term use.Durable, rust and corrosion resistant Strong stability and wear resistance.Galvanized surface treatment, beautiful and generous Each key has 3/4 notches inside the barrel(optional). The old part number is E3-26-715-15, and the current part number is E3-5-15. Some older keys may have a different head style. These Barrel keys are commonly used to lock and unlock RV hood compartment doors and RV baggage compartment doors. Specification: Material: carbon steel Scope of application: hollow key Package Includes: 1 Piece Barrel Key(3 Pack) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!