Copper Coin Slot Bank Lid Inserts for Mason, Ball, Canning Jars (10 Pack, Regular Mouth) 10 copper coin slot lid inserts for regular mouth (2 3/8" internal diameter) Mason jars per order. Bands and jars sold separately - check out our copper, gold, and stainless steel bands on Amazon or use the bands that came with your jars. Add this coin bank lid to any size regular mouth Mason jar and you have a piggy bank! Keep one in your closet to collect all those extra buttons that come with your clothes! Or use these slotted lids to collect and store any other small objects. Buy one for each of your kids! They are made of tin plated steel that has been electroplated. This means the cutout edges are raw steel, which can rust. Hand wash and dry. Your entire Mason Jar Lifestyle order ships for a flat $3, or spend $35 for free shipping. Check out our other products! Usually ships same or next day via USPS First Class from Denver, CO.