10pcs 100% stock HEF4027 in HEF4027BP orginal new DIP-16 trigger 10pcs 100% stock HEF4027 in HEF4027BP orginal new DIP-16 trigger 10pcs 100% stock HEF4027 in HEF4027BP orginal new DIP-16 trigger 10pcs 100% stock HEF4027 in HEF4027BP orginal new DIP-16 trigger 10pcs 100% stock HEF4027 in HEF4027BP orginal new DIP-16 trigger 10pcs 100% stock HEF4027 in HEF4027BP orginal new DIP-16 trigger 10pcs 100% stock HEF4027 in HEF4027BP orginal new DIP-16 trigger 10pcs 100% stock HEF4027 in HEF4027BP orginal new DIP-16 trigger