Brand: waterproof ring Color classification: 0.5 thick (12-30mm) 0.6 thick (12-30mm) 0.7 thick (16-30mm) 0.7 thick (31-40mm) 0.8 thick (31-40mm) 0.9 thick (31-40mm) size: 0mm<img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/addd478f-4612-47a9-964e-994b83a69de1.jpg" style="font-size: 14px; max-width: 100%;"><img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/3a2fe772-b2d5-4f58-b93e-ca9c5858aecf.jpg" style="font-size: 14px; max-width: 100%;"><img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/fb8edeb2-33aa-4d7d-8785-ccace9fd62ac.jpg" style="max-width:100%;"><img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/b795b1c6-8840-49af-9984-a7c9741c3002.jpg" style="font-size: 14px; max-width: 100%;"><img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/1fca0c09-306e-4331-bd55-75c2bebb2d03.jpg" style="font-size: 14px; max-width: 100%;"><img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/54f12fce-a44e-409a-a3d6-5a65a83c5df9.jpg" style="font-size: 14px; max-width: 100%;"><img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/61d94252-c284-4254-863f-d5b7ad1e6f0f.jpg" style="font-size: 14px; max-width: 100%;"><img src="https://cc-west-usa.oss-accelerate.aliyuncs.com/c9fb14a5-24f4-4f46-9007-e9931939aafe.jpg" style="font-size: 14px; max-width: 100%;">

Color: 0.5 coarse - Back cover waterproof ring