• Brass-plated cover plate includes slotted locking mechanism
• Opens with simple turn of the flathead screwdriver or coin
• Cover plate consists of 7" (18cm) O.D. brass outer ring and hinged brass cap
• Heavy-duty steel sleeve receives 3" to 3 ½" (7.6 to 8.9cm) upright and is 8" (23cm) deep
• 1" (2.5cm) clearance required between top of floor and sleeve

Net sports utilize floor sleeves that are secured into a facilities floor with a locking brass cover plate keeping it flush when not in use.