Ejector pin is the of the injection molding world. They apply a force to eject a part from the mold, and in some cases can leave marks. We are to design and position pins to minimize their effect on your parts. You can apply this product to release elasticity from bottom. And the features of the product are that it can adjust to required eject height in advance and it is easy to install. product information Material SKD61 Inner Hardness HRC43 HRC52 Surface Hardness HV1000 HRC52 Heat Treatment Nitrided Vacuumed