Check the listing for details. 2x Knee Reflex Hammers for Medical Testing. Condition: Used. Listed at 19.99 USD. 2x Knee Reflex Hammer for Medical Testing Used - Good Condition Disclaimer Ebay requires the following wording to list in this category and is included for reference : “The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies.” jmc7144512559 Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.