Barraquer Wire Speculum overall Length 40mm, Blades 14mm: This is an ophthalmic instrument used in retracting the eye lid and holding it open during surgery. This speculum is a lightweight, spring style, wire form instrument, therefore minimal pressure is placed on the eye. This product is the 40 mm Length Overall size speculum and has 14mm blades. Barraquer Speculum Wire Speculum Barraquer eye Speculum Barraquer Lid speculum Premium Instruments