Heavy Duty & Suitable: The support clamp is made of strong aluminum alloy with a secure, compact construction design, offering corrosion-resistant and rust-proof properties for steady, durable, and long-lasting performance. Adjustable desk partition clamps are designed to mount onto any desk, counter, or table. Thickness range: (0.67"–2") / (1.7 cm–5.1 cm). Dimensions: Clamp: (1.65 × 1.3 × 2.36) inches / (42 × 33 × 60) mm, 2.7 oz / 75 g; C-shaped base: (2.05 × 2.05 × 3.62) inches / (52 × 52 × 92) mm, 7.8 oz / 222 g. Features a steady and strong design with two non-slip rubber pads on the surface that contacts the table for added stability and to prevent damage to the desk. What You Receive: An assembled set of 2-pack desktop support clamps, including: C-clamp × 2, clamp base × 2, 20 mm screws × 2, 25 mm screws × 2, screwdriver × 1, shield clamp mat × 4. The two types of screws allow the clamp to be used with acrylic panels or plexiglass shields from (0.079" to 0.59") / (2 mm to 15 mm) thick. Simple Design & Easy to Install: These support clamps feature a bead-blasted finish for a clean, professional look without concerns about color fading. Designed for easy and convenient installation.