Elevator Hydraulic Shock Absorber Buffer OH80 175 210 275 425Please note that this product is a safety component and cannot be returned or exchanged after it has been sold. Please confirm the model, speed and steel rope diameter before purchasing, thank you. Some products require a production cycle, please consult online customer service for details. Buffer is device to provide a final elevator safety protection generally installed in the elevator shaft bottom pit, located right under the car and counterweight.