The series of biconvex hand-held Eschenbach magnifiers offer high-quality magnification. These magnifiers are completely transparent for maximum illumination and shadow-free viewing. Has a slot in the handle for a carrying cord. Lens Material: PXM Plastic. 6cm diameter lens with 2.5x magnification including 1.2cm diameter bifocal lens with 5x magnification. Measures 15.5cm in length.