Techfab International manufactures Cannula with Injection Valve and Wings. Techfab International is an ISO 9001:2000 certified company. The Cannula with Injection Valve and Wings has transparent flashback chamber for immediate confirmation of venipuncture. It has specially designed thumb stop to prevent any instability during needle insertion. It also has siliconised and ground stainless steel needle with ultra-sharp triple facet bevel for smooth and painless venipuncture.