This magnifying glass is specially designed for fitting on vises and shows small details on flies without distortion. It has a flexible arm fully adjustable to any position with a small attachment that permits an easy and stable locking on vise stems from 8 to 10 mm diameter (including American standard 3/8 in. stems) or on accessory stems with diameter of 5 mm or less. Lens is 2X magnification, 80 mm (3.1 in.) diameter, flexible arm 35 cm (13.76 in.), weight 170 gr (6 oz.).