Vintage Russian military K42Y-2 .047uf 160V capacitor. K42's are metalized paper in oil, glass sealed in a metal body. These make great tone capacitors for guitars. .047 is a good value for Strats and Tele's or bridge pick-up in Les Paul's, Epiphones or other Gibson-style guitars. A really nice capacitor for the price. The K42's in particular are like a new speaker and will sound their best after being broken in for several hours.