For tubes 2" (51mm) I.D.
Recommended for removing soft and light scale deposits in straight, ferrous and nonferrous tubes. Order brush to correspond to tube I.D.
Note: TCB Brushes require a #TCB-C Coupling ($8.00) to connect to GTC-720, GTC-721, GTC-721G
and GTC-821 Flexible Shafts. (One coupling is supplied with each brush order.)