Nightstick Magnetic Base Screw Washer and Lock Washer Series Lights. This piece of Flashlight Gear from Nightstick was created using top of the line materials and construction to provide you with an enhancement to your flashlight that will have you shedding light on any situation. For a great way to make sure you are working with the best possible additions to your flashlight choose the Nightstick Magnetic Base Screw Washer and Lock Washer for 1504 Series Lights. Package Contents: Nightstick Magnetic Base Screw Washer and Lock Washer for 1504 Series Lights Nightstick 1504-BASE: Magnetic Base Screw Washer and Lock Washer 1504 Series Lights