This is straight out of the RPS: SPACER, 70 MM LG., 20 MM W., 3 MM THK., 2 BY 8 MM DIA. HOLES, GALVABOND SHEET, STEEL We think it is a spacer plate under the lashing rings. 4X per vehicle. *** Specific Brand Part *** This product is not specific to one brand. If the product photo shows or the description lists a specific brand, we may provide you with the same or similar part of a different brand. For more information, please see our Terms and Conditions.