This screw kit is versatile, with 24 aluminium, precision screw heads included in each kit. Pictures are below each screw on the kit case, making it easy to keep your screw heads organized and easy-to-find. The screws are easy to use, simply connect the desired screw head onto the screwdriver provided. The effective corrosion-resistant screw heads are durable, made of high-grade steel. The sleek aluminium box is magnetic to secure each part in place and is also discrete and easily portable.