This product is a combination product that cannot be detached. Please remove all old parts and use all our parts to work properly. Advanced zinc alloy fire- keyboard with swing , rugged, fire-, -, provides physical protection against forcing entry, and provides 3 error code lock modes 95 mm (3.74 inches) round panel, weighing 6.35 oz, remember to check the size before purchasing to match your safe, you can refer to our product description video Easy to install] There are 3-8 digital codes when opening, which can be programmed, and 3 different colors of lights indicate different states.To replace the battery, the tab counterclockwise to remove the keyboard Our numeric keypad safety swing replacements are suitable for home and lock boxes, , hotel , cabinet , slot Color: Black Material: Metal Package Contents: 1 * -replacement-lock-stack- 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.