The Gamma+ Absolute Hitter Professional USB Cordless/Corded Modular Hair Trimmer with 3 Magnetic Guards comes with three matte colored lids. It’s the one tool you need to create those fine, detailed edges along the hairline. It's specifically designed for precision edging, outlining, and light shaping around the areas that need it. The drop-top lid can be removed to expose the blade, which then helps improve your sightline for enhanced cutting and trimming accuracy. But aside from that, this feature also helps the blade stay cool during the operation since it allows heat to dissipate much quicker. The blades on our trimmer are made from premium quality carbon steel. They're super sharp and they offer a consistent cut at all times without pulling or tugging at the hair strands. They are non-corrosive and the edges retain their sharpness even after a long time.