SE Plastic Ring Sizer (23 PC.) - 8903FG. Features : EASY TO USE: Punch out the appropriate size for your finger. Make sure it fits comfortably as you would like your ring to. Then, give the plastic ring with the correct size to the jeweler. The jeweler will then measure the plastic ring on their mandrel and ring stick to ensure the most accurate sizing!. HANDY: Use it for making, purchasing, repairing, or sizing rings for you, your fiancé, or a gift to someone else.. ACCURATE: Avoid getting the wrong size and be sure to use our reliable plastic ring sizer to find the most accurate size! Do not depend on a finger gauge set, ring stick, or ring mandrel with differing brands because they do not always match up.. CONVENIENT: Each ring sizer is individually marked with the size for quick and easy identification. The sizes are arranged from small to large.. 23 RING SIZES: This ring sizer measures rings from USA size 2 to 13 with 1/2 increments. The ring sizes are for both females and males.