38mm toroidal ring (inner measurement) made of zinc die-casting - with spring lock - 1 piece 38mm toroidal ring (inner measurement) made of zinc die-casting - with spring lock - 1 piece Product detailsManufacturer Product details Toroidal ring made of zinc die-casting, nickel-plated Inner diameter: 38mm Thickness of ring: 5mm Aperture of spring lock: 16mm The price is valid for 1 ring. Manufacturer