The capacitors are part number CAP CER 56PF 63V C0G/NP0 0805. Their specifications include a capacitance of 56 pF with a tolerance of ±10 percent and an operating voltage of up to 63V. These capacitors have the designation C0G, which stands for Ceramic Class 0 (or NP0 in some regions), and they are available in the compact 0805 package size.