Use on workbenches or roll it up and take it with you. This heavy-duty soft vinyl mat has raised nubs that are designed to capture and retain several hundred pins and prevent them from spilling onto the floor. This new design has 4 built-in Pinning Blocks for keying cylinder plugs and 2 Holding Blocks for cylinders. This feature helps organize keying and prevents mixing of pins and parts. Dimensions are 21-1/4" x 11-1/4" x 1/4".