Specifications: Opening [mm]: 300 Spacing [mm]: 50 Rail [mm]: 15x 5 Weight [kg]: 0.35 Quantity in multipack [pcs]: 10 Clamping force up to 1,500 N Fixed and movable arm made of die-cast zinc painted in black, resistant to cracking Movable arm protected with a protective cover Small and handy Light weight ** Illustrative photo