Package include：1* Tool Protective Boot (noctilucent) Part Number: 49-16-2554 Function: The luminous protective cover is a special type of electric tool protective cover that can emit luminous light in the dark, making it convenient for users to use and search for electric tools at night or in the dark. This type of protective cover is usually made of silicone or other soft materials and has functions such as anti drop, shockproof, waterproof, etc. It can also protect electric tools from daily wear and scratches. Effect: The luminous effect of the luminous protective cover usually comes from built-in luminous materials, such as luminous oil or powder, which can emit a soft light in the dark when stimulated by light. In addition, some night light protective covers also have a self illuminating function, which can automatically emit light in a dark environment, providing convenience for using electric tools. Compatible with M12 FUEL Stubby Impact Wrenches 2554, 2555, and 2555P Protects surrounding surfaces from scratches, nicks, etc. Protects tool from damage if dropped, Adds further protection from unwanted contaminates that can affect tool performance.