General description You will receive 16 sets of stainless steel standoff screws, including 16 standoff screws, 16 screws, and 16 expansion screws. This combination provides enough quantity to meet your demands and replacements. Technical specifications Size: 19 x 30 mm Material: Stainless steel Color: Gold Measurement allowed error: +/- 1-3 cm Wide Range of Applications Glass panels Acrylic panels Acrylic plates Acrylic photo frames Indoor and outdoor advertising signs Photos Installation Install the expansion tube into the wall Fix the spacer screw with screws Requires a screwdriver for tightening the spacer screw Other information Light reflection and different displays may cause the color of the item to differ slightly from the actual product.