This is a discontinued and rare Nittaku table tennis side tape. It has been re-rolled as shown in the second photo. Hina Hayata used to use this. I think it's impossible to get this anymore. It may be slightly shorter in some cases. If you absolutely need 50cm, please write it in the comments. Usually, 45cm is sufficient. Because it is a discontinued and rare item, the adhesive may be slightly weak or there may be some dirt. Please understand.