SurgiVet Clearview PTFE Coated Wire Guides. Recommended to be used with Economy Clearview Oral/Nasal Oxygen/Feeding tubes and Clearview Foley Catheters. Sterile. Reusable and autoclavable. Available in the following sizes; TCGW1830 for 3Fr Catheters 30cm, TCGW2170 for 5 & 6Fr Catheters 70cm, TCGW3570 for 8Fr Catheters 70cm, TCGW3870 for 10Fr Catheters 70cm or TCGW38180 for 10Fr Catheters 180cm.