United Scientific 139.450.05A Borosilicate Glass Graduated Cylinder with Hexagonal Base and Bumper Guard， Single Scale， Class A， Batch Certified， 250ml Capacity</br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31vULYxQ8lL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31qbQfDIGRL.jpg' noproxy></br>