Amazon.com: Ziqi 2PCS V Type Pulley Roller 304 Stainless Steel Pulley Block Duplex Bearing Super Silent Heavy Duty Grooved Wheel, Loading 500lb for Material Handling and Moving, Gym Wire Rope Rail Sliding
Groove Wheel Pulley Stainless Steel Pulley Block Super Silent Single Pulley Block for DIY Gym Equipment,Sliding Gate Detachable Duplex Bearing with Mounting Screws and Expansion Pipes U Type (1 Pack): Amazon.com: Industrial
Stainless Steel Decora Switch Cover, Metal Wall Plate, 2 Gang Standard Size, 1 Duplex Receptacle, 1 Blank, 4.50" x 4.56" Corrosion and Heat Resistant, Unbreakable Metal - Amazon.com