H160d rock hammer piston brand new produce. This piston is fully new manufacturing at Merit’s facility. The reason why you can buy with 100 percent trust. We give 12 months/ 1 year warranty for our producing hydraulic breaker pistons. We will with you after all sales and purchase for technical support. We know well hydraulic hammers as like as you. We are ready to share all our experiences with you free of charge. We do sell not only parts but also solution for your hydraulic breaker issues. We can help you some other problems you faces with breakers. We have a WhatsApp network to help our customers. Many customers take photos or videos about their hammers problems to send us. By this way we send him solutions and spare parts. You are also invited to join our network. Below we open our contact information to you satisfaction.