This special grommet accessory kit is required when attaching an LX arm to the popular Work Fit-T/TL Sit-Stand Workstation. Perfect length to securely attach the LX arm's base to the Work Fit-T/TL Leaves plenty of clearance under the workstation's surface to ensure nothing interferes with the unit's support apparatus during height adjustment Attach LX arm through the pre-drilled hole pattern on the Work Fit-T/TL surface