High-Quality Material: The support clamp is made of strong aluminum alloy, featuring a safe, compact construction design that is corrosion-resistant and rust-proof, stable, and durable for a long lifespan. Dimensions: Clamp: (1.65*1.3*2.36) inches / (42*33*60) mm, 2.7 oz/75 g; Freestanding Base: (7.87*1.97*0.24) inches / (200*50*6) mm - 6.1 oz/172 g (Stable and strong aluminum plate with anti-slip adhesive mats on the bottom). What You Get: Set of 2 desk support clamps: 2 clamps + 2 freestanding bases + 2 x 20mm and 2 x 25mm screws + 1 screwdriver + 4 clamp mats + 4 fixed screws. The 20mm and 25mm screws allow the clamp to accommodate acrylic panels or plexiglass guards from (0.079" to 0.59") / (2mm-15mm) thick. Simple Appearance and Easy to Apply: These support clamps have a sandblasted finish, a stylish look without worrying about color fading. Easy to apply, they come with a screwdriver for convenient installation.