Four capacitors from Murata Manufacturing, the world's number one manufacturer of ceramic capacitors, rated at 0.01uF (103). When used with a bridge pickup in a Stratocaster, etc., it produces a "wah-half-cocked" nasal tone when the tone is rolled off. Even with a humbucker, using these on the bridge pickup will result in a delicious tonal change. Rated at 50V, 11mm in diameter.