Feature 1The 304 material is more rustproof and durable 2Waterproof, rustproof and corrosion resistant 3The surface is smooth without burr 4Can be used for fitness rings, yoga rings, dog rings 5Also for diving, rock climbing, mountaineering ...SpecificationFeature: The 304 material is more rustproof and durable Waterproof, rustproof and corrosion resistant The surface is smooth without burr Can be used for fitness rings, yoga rings, dog rings Also for diving, rock climbing, mountaineering ... Specification: Options: 10040,10050,10060,10070,10080,70090,10100,10065 Color: silver Material: 304 stainless steel Dimensions: Approx. 10040: wire diameter 10mm, inner diameter 40mm 10050: wire diameter 10mm, inner diameter 50mm 10060: wire diameter 10mm, inner diameter 60mm 10070: wire diameter 10mm, inner diameter 70mm 10080: wire diameter 10mm, inner diameter 80mm 10090: wire diameter 10mm, inner diameter 90mm 10100: wire diameter 10mm, inner diameter 100mm 10065: wire diameter 10mm, inner diameter 65mm Weight: Approx. 92-144g Package List: 1 x Ring