The TOOLCRAFT item 88251 is a practical accessory for internal hex screws, made from high-quality gray plastic. With a thread type of M16 and M18, this product offers versatile applications in various projects. The items are available in a convenient sales unit of 200 pieces, ensuring an adequate quantity for numerous uses. The gray color allows for discreet integration into different materials and environments. This product is ideal for professionals and hobbyists who value quality and functionality. The use of plastic as a material ensures high resistance and durability, while the precise dimensions allow for easy handling and assembly. Whether in construction, the automotive industry, or general craftsmanship, this item is a valuable addition to any toolbox.