【Solvent Weld and Easy Installation】 Riveting with glue or heat to shower base. 【Shower Base Drain&Shower Pan Drain】Only apply to shower Shower Base and Shower Pan. 【Size Adapter】 The size adapter at the bottom better fits standard 1.5“ and 2” pipes.Can be installed in most standard pipes on the market.Tip:This product is a solvent welde pipe install way.