Philips 540-509 TightRail Mechanical Rotating Dilator Sheath, 9 Fr X 18.7" / 47.5 cm Size, Device Inner Diameter 9.2F / 0.119" / 3.0 mm, Outer Diameter 15.9F / 0.207" / 5.3 mm, Outer Sheath Inner Diameter 20.0F / 0.266" / 6.8 mm. Box of 01