Nucleus manipulators are typically titanium and often feature round, knurled handles, and are available in many micro tip styles that are used to manipulate the nucleus of the eye during cataract, lasik, and other intraocular procedures. Bechert manipulators feature horizontal or vertical blunt, Y-shaped tips. Button Manipulators have tips that are angled from the shaft, terminating in a button shaped like the head of a pin. They are commonly used during capsule polishing and for iris retraction. Drysdale Manipulators are shaped like a fine, thin paddle. ICL manipulators are used to aid in positioning the superior and inferior haptic of a lens under the iris. The tip is shaped like a paddle, smaller than a Drysdale with less surface area, and is slightly sandblasted to aid in grip and ease positioning of the lens. The Katzen style is double-ended with a modified Sinsky hook on one end and a slightly bi-convex spatula that is set at an angle to the handle on the other end. Additional styles include Lester, Seibel, 90-degree manipulators, c-style microball, and olive tip.