Quick tip to prevent damaging decorative screw heads. Using Slotted screw these days usually means that it's for decorative purposes, and will often be brass, bronze, or copper. Using normal screwdrivers will often leave you will a damaged screw head since the material is so soft. Gun Smiths and Armorers screwdriver sets can be a cheap source of parallel ground Screwdrivers of varying widths that will give you a perfect fit and leave the head intact.