KO-20T is a Tan slot rubber used for die ejection applications. It has a durometer "A" scale reading of 40 - 50 and a durometer "00" scale reading of 85 - 90. This product is a sheet size of 10" x 20" and comes in many different heights: 1/16", 1/8", 5/32", 3/16", 1/4", 5/16", 3/8",7/16", 1/2", 9/16", 5/8", 11/16", 3/4" and can be Scalloped, Straight, Kiss Cut or Custom Cut to any size to suite your needs.