Pachmayr Shock Shield 107101103 Manufacturer part #: 20 8917001000 Manufacturer part #: 20 8917001000 nylon cases offers exceptional durability weather resistance Tactile indicator on rotary knob for IR LED position Push button switch enables disables selected illumination source Introducing hands free task lighting with various color LEDs operable at varying outputs and runtimes Soft gel pad for greatly reduced recoil One size stretches to fit most rifles and shotguns Easy on and easy off Won't harm stocks Non slip pad face texture The Shock Shield is the simple solution to reducing recoil in a variety of rifles and shotguns No need for different size pads