The portable black SE GC-BL-1AAA Compact Bore Light has fiber-optic acrylic, which easily attaches and slides onto the lens of the flashlight. The SE GC-BL-1AAA helps to illuminate any scratches or debris within the barrel of your firearm for cleaning and maintenance. It is great for inspecting items and looking in tight spaces. The flashlight is also able to be used as a stand-alone light source. With its conveniently compact size and clip-on feature, you can keep the SE GC-BL-1AAA Compact Bore Light easily on your person. It requires 1 AAA battery and provides a helpful bright light when you need it. The battery is not included.The SE Compact Bored Light is compact and lightweight, making it easy to carry in your pocket or gunsmithing kit. Its durable construction ensures long-lasting performance, even in rugged environments. The ergonomic design provides a comfortable grip, allowing for precise handling during inspections.