Part number : 970-0770 Stem Adapter only fit Pfister long stem Secure Pfit Trims replacement Size : The length of the stem is 2-5/16 inch - 58.4 mm, and the width is 21/32 inch - 16.5 mm,which is designed to fit standard shower or bathtub Material : made of quality brass construction material, which can withstand water pressure and also hot and cold temperatures, and has a long service time, strength and reliable performance Installation: Easily install with wrench, remove the old part at the base of the faucet, then install the new stem adapter. Part number : 970-0770 Stem Adapter only fit Pfister long stem Secure Pfit Trims replacement