Shower door rollers Sliding Tub Shower door Replacement Rollers 3/4" by oobest (8 Pack) Suitable for most shower enclosures, shower cabins, steam cabin enclosures and bathtub This 3/4 in. tub enclosure roller is constructed from nylon. It features an oval edged design with a threaded. It comes complete with fasteners for a quick and easy installation The rollers are affixed to the top and bottom of shower doors in order to provide smooth running when you open and close your shower doors, can move the bathtub anytime to anywhere that you want Nylon pulley, light weight, good wear resistance, long service life, do not produce friction sparks, safety to meet the long-term use The oobest rollers easy to install and use, which won't damage your glass door