Keyhole Hanging Plate, 37mm x 13mm Single Hole Hook for Picture Frames with Screws, 50 Pcs (Silver) 1.1 Inch They are used to diffuse

They are used to diffuse air and muffler noise from the exhaust ports of air valves

Advantage: RG316 coaxial cable has good anti-electromagnetic interference and softness

Cylinder Bore: 50mm

Overall Size: 61 x 42 x 41mm/ 2

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Keyhole Hanging Plate, 37mm x 13mm Single Hole Hook for Picture Frames with Screws, 50 Pcs (Silver) 1.1 Inch They are used to diffuseMade of good quality iron and zinc plated finish, anti corrosion and durable to use. Keyhole hangers can be used to hang artwork, plaques, wall decor, picture frames and mirrors, etc. Easy to install by screws. Mounting screws are included here. Specification: Material: Iron Finish: zinc plated Plate Thickness: 0. 7mm 0. 028" Mounting Hole Diameter: 4mm 0. 16" Keyhole Size: 13mm x 7. 5mm 0. 51" x 0. 295" (L*Max. D) Screw Size (+ 1mm): 3mm x 12mm 0.