엘리베이터 문 잠금 롤러 엘리베이터 예비 부품 45*15*12 OD45mm W15mm ID12mm DK-RSL-RN4

Video Description:
Discover the essential Elevator Door Lock Roller, model DK-RSL-RN4, designed to reduce friction, transmit power, and ensure door synchronization in elevators. Perfect for smooth and safe elevator operations.