Cork Joint Mat Side Parts 2 Types, Set of 28 Thickness: 8mm These are parts to attach to the edges of 30x30cm cork joint mats to make them straight. We have 46 corner pieces and 78 non-corner pieces in stock, so please comment with the desired number, freely combining them. If you want more than 28 pieces, the shipping cost will change, and the price will be adjusted. Although it is a new, unused item, please understand that it is a used item stored at home. Thank you.