Dear Sir, Its round rings for Drum with Clamp made from SS please mail me to to mail you drawings. Thanks 联系方式Co:Pankaj Shah Add:12 Raja Indl Estate Mulund west, Mulund (W) , Mumbai, Maharashtra, India Tel:91-22-2567 9586 Fax:91-22-2568 6280 Email::bosscompressor@gmail.com. Website:www.bossaircompressor.com Mobile:093242 97949联系人：Mr. Pankaj Shah国家：India产品类别机械五金bosscompressor@gmail.com.
