For use with Back Pack® guides to help provide a quieter operation. No.2826 (1/8") is inserted between the single carrier and its attached Back Pack® Guide. No. 2827 (7/16") is inserted on other side of the Back Pack® Guide as well as between the master carrier and adjoining single carrier.

This spacer is also used with Nos. 2849, 2850, 2851, and 2852 carriers to prevent wheel lock which can occur if the neoprene tires are allowed to come in contact with each other during operation. No. 2827-A is used with Model 283-N and Model 283-R tracks it has a larger 5/8" hole for use with Model 2830 cord.