A general-purpose PN junction diode securely mounted on a durable plastic box with their respective terminals are clearly marked and externally accessible for easy connection. Includes two nos. of spare DCC wire (50cm each) provided as lead for connection. LDR secured mounted on durable plastic enclosure with their respective brass terminals for external working. Double cotton covered enameled copper wire, 22/24 SWG, ideal for electrical & electronic experiments. Quantity 100gm roll.