This is an ultra thinwall cannula (20 G) with 45? beveled tip along with a flexible silicon tubing. It is designed to provide more effective infusion than a regular wall cannula. The flexible tubing is 25 cm (10 in.) long and attaches to an infusion source. Both ends of the infusion cannula are strongly secured with the silicon tubing thereby making it an ideal instrument for silicon oil injection. Tips Sizes : 2.5mm, 4.0 mm & 6.0 mm