| Source guide tube with locking mechanism for 113 mm interstitial implant tube, GammaMedplus | 00816389021556 | Varian Medical Systems, Inc. | Class I | |
| Source guide tube with locking mechanism for 200 mm interstitial implant tube, GammaMedplus | 00816389021518 | Varian Medical Systems, Inc. | Class I | |
| Source guide tube with locking mechanism for 250 mm interstitial implant tube, GammaMedplus | 00816389025165 | Varian Medical Systems, Inc. | Class I | |
| Source guide tube with locking mechanism for 320 mm interstitial implant tube, GammaMedplus | 00816389021464 | Varian Medical Systems, Inc. | Class I | |
| Source guide tube with locking mechanism for 500 mm interstitial implant tube, GammaMedplus | 00816389023796 | Varian Medical Systems, Inc. | Class I | |