Remote pressure switch is specially designed for -501B flashlight. With this switch, you can control your . 100% Brand New Function: Remote Pressure Switch Compatibility Models: -501B LED Flashlight Suit for flashlight which has the same metal housing Size: 3cm x 2cm x 2cm - 1.18inch x 0.78inch x 0.78inch Remote Pressure Switch Diameter: 23.5mm Material: Aluminum, Plastic Color: Black Note: Before bidding on this item, please make sure the switch fits your , because some versions of the on the market may be different Package Included: 3 x Remote Pressure Switch for 501B Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.