Vape Rings Silicone Anti Slip Band Mechanical Mods Pack of 20 for RBA RDA Tank Mechanical Mod 18650 These Vape Rings are a simple design. The anti slip rubber helps you with those hard to turn mod locks. Directly fit on your mechanical mod or rebuildable atomizers. Also serves as a bumper for your tanks and can save your mod from minor scratches. Gives extra grip when holding your mod as well, especially in wet conditions. Vape Rings width 12mm 0.472 Inch RBA RDA Tank Mechanical Mod. Sizeinner diameter 18mm 0.708 Inch Package include: 20pcs Rubber Silicone Ring Band  Note: we send mix colors/designs by random!