The Ultimate weapon to fight Head Lice and their Eggs. The Derlice Lice & Nit Free Terminator Comb is made from stainless steel and won't break or rust when used as directed. ANTI-SLIP Bands: The bands allow for better gripping and control, particulary when hands are slippery from treatment or conditioner. ADVANCED LASER TECHNOLOGY: The laser technology welding makes the DerLICE Lice & Nit Free Terminator Comb a highly sturdy and long-lasting comb. MICROGROOVED TEETH: The micro-grooving consists of microscopic edges that are positioned along the teeth in a tight spiral form.