Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low View: 12 24 All Quick View Quick View Cottle Ball End Retractor Two Ball Prongs 6 1/2″The Cottle Ball End Retractor is a surgical instrument that is used to hold tissue out of the way during procedures. The retractor features two ball-shaped prongs at the end of a long, slender handle.