Laser refers to the profile applied to the wheel. This allows for a non-slip start and deeper scoring. For this cutter, a sharper tip angle allows for a narrower scribe line. Good for very thin glass 0.03mm up to 2mm and hard glass 0.3-2mm. This cutter excels at cutting ultra-thin glass, as well as hard glass, quartz, silicon and III-V semiconductors. Wheel cutters produce a cleaner scribe line than point scribes and minimize the number of particles generated. Plastic handle is 5" long.