Non-silp ratching design gives you a firm and comfortable grip Made of Aluminium Alloy, the tatoo grips is very durable, wear resistant and rustless Suitable for most tubes Great grip for professional tattoo artists and tattoo beginners. Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you!