Sufficient screwdriver kit:There are extra alternative blades of each size for you to replace the screwdriver in case of losing or not working, as as a mini screwdriver to carry with you, which can satisfy your demands on dealing with emergencies of fixing eyeglasses or watches. Thoughtful presents of watch makers screwdriver set:The electric screwdriver are practical for mechanics, proper for sending to your father, , neighbors and watch repairman, proving an effective way to repair or fix, saving their time and energy at work. Size: Length: about 8.8 x 0.8 cm or 3.46 x 0.32 inch Flat head: 0.6 mm or 0.024 inch, 0.8 mm or 0.032 inch, 1.0 mm or 0.039 inch, 1.2 mm or 0.047 inch, 1.4 mm or 0.055 inch, 1.6 mm or 0.063 inch, 1.8 mm or 0.071 inch, 2.0 mm or 0.079 inch head: 1.2 mm or 0.047 inch, 1.4 mm or 0.055 inch, 1.6 mm or 0.063 inch, 1.8 mm or 0.071 inch, 2.0 mm or 0.079 inch Colour:silver Material:tool steel Package Contents: 13 x Mini jewelry screwdrivers 13 x Replacement blades 1 x Demagnetizer 1 x screwdriver Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.