Check the listing for details. Promaster 72-62mm Step Ring. Condition: New. Listed at 5.95 USD. PROMASTER Stepping Rings are the perfect addition to your collection of photographic gear. In the unlikely event of a water landing, your seat bottom may be used as a flotation device. Our small town philosophy of providing the finest products at low prices with honest and knowledgeable salespeople is the key to our success.