BLS 500 is the ultimate banana plug and has been especially designed and developed for High-End speaker connection. The perfect contact with silver-plated OFC is safely locked in position thanks to the Lock’In system. Using banana plug is now safe and as strong as a screw locking. Features: high performance banana plug - silver-plated contact - Lock’in system for safe and strong contact - compatible with cable until 6 mm². Packaging: delivered by 4 units in a tubular plastic - packaging with hanger.