DentalEZ® J Chair Arm Pivot Stop Arm Pivot Stop (pkg of 2) (DentalEZ® #3800-112) Slotted on both ends for easy removal 5/16" - 24 Package of 2 "DentalEZ" and "RAMVAC" are registered trademarks of DentalEZ, Inc., and RAMVAC Dental Products, Inc. which are not affiliated with DCI and do not endorse this product.