1、Anti Water Backflow: The bathtub tub drain installation kit tightly connects the tub to the floor, and the rugged copper piping increases the stability and security of tub installation, effectively preventing water backflow and potential odors. 2、Leak Proof Design: The freestanding bathtub tub drain kit secures between the subfloor and floor tiles, enhancing security and stability. The test cap guards the drainage pipe during construction and undergoes multiple air pressure tests. 3、Multifunctional: The freestanding tub drain rough in kit is suitable for all freestanding, drop in, and island tubs, offering stable installation on wood, concrete, tiles, and cement surfaces. 4、Built In Drop Test Cap: This tub drain rough in kit has a built in drop test cap for water or air testing. The blue protective cover can prevent cement and bricks from falling before installation is complete. 2in to 1 1/2in drain adapter for standard US pipe fittings suitable for 1 1/2in or 2in P traps. 5、Wide Application: This freestanding tub drain kit is suitable for freestanding tubs, and it is recommended for plumbers, remodelers, contractors, builders, and handcraft enthusiasts for installation on freestanding tubs, providing easy and convenient drainage.