X-73LGL..Extra Long Shelf Rest Support Extra Long Shelf Rest. The plate is the part the shelf sits on and it is 1 Inch Long x 1/2 Inch Wide x 1/2 Inch High. PIN: 1/4″ diameter x 7/16″ long Black Steel. Overall length with pin is is approximately 1-7/16 inches. When the shelf is too short for the space it is advisable to screw the supports to the bottom of the shelf after it is installed. Without securing with screws leverage can pull the shelf pins down and then out. Sold individually.