Stainless Steel Advertisement Screws Glass Standoff 12x20mm 20 Pcs

Dimensions: Totally Size: 12mm x 20 mm, about 1/2" x 4/5". Thread Stud length: 9/16", suggest to hold the glass or panel with a thickness less than 3/8". Thread Stud Diameter: 1/4" Barrel length: 15mm, about 9/16"?from the wall to the back of the glass or panel. Hole Size: 5mm, about 3/16", will fit for 5mm combination screw. ? How to install: Make sure the thickness of your galss or sign is less than 3/8". Buy the 12 x 20mm standoff from Lantee Drill holes on your sign, and make sure the hole size range is 1/4" to 3/8". Mark the holes of your sign on the wall, make sure the sign will install on the right place. Drive the anchor screw to the wall, make sure the screw's?diameter is lower than 5mm. Install the barrel on the wall. Put the sign or glass on and thread the stud to the barrel ? Feature: Material: Stainless Steel Easy to use and install Every standoff have?clear rubber spacer between Stud and Barrel, which will protect your galss. Package include: 20 pieces