The screwdriver is a simple one. The following commonly used screw sizes are included: M1.0 x 4.0mm 4 pieces M1.2 x 4.0mm 4 pieces Titanium (Ti) Size: Approximately 14*7*2mm (excluding protrusions) Fixing part: Approximately 3*2*2mm Screw hole diameter: Approximately 1.2mm It came off... It's yellowed... "But it's a hassle to go to the optician for such a small part!" For those people, here you go! Having a pair of fine-tipped tweezers will make the installation process smoother. -------------------- #NosePadPonzuSelect Nose pads Repair Glasses Eyeglasses Sunglasses DIY Nose pads