RAPD - Aiming Ring - Posterior - Ea by Flow X-Ray SKU 919-0510AA 123 $9.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Payment methods: We accept all major credit cards American Express Apple Pay Diners Club Discover JCB Mastercard Visa Posterior Aiming Ring for RAPiD X-Ray Positioning System, single ring.