Amazon.com : Tondiamo Patio Chair Spring Plates Swivel Rocker Chair Fiberglass Spring Plates Patio Rocking Chair Spring Plate Replacement Parts for Universal Outdoor Patio Furniture, 5 x 2.5 x 0.25 Inch (Black) :
Velocity Concrete Screw Kit with RedSeal Moisture Barrier – Includes 12 High-Performance Concrete Screws, 1 Drill Bit, and 1 Driver Bit (Flat Head, Size 1/4” x 2 1/4”): Amazon.com: Industrial & Scientific