Shower door rollers are internally threaded. Shower Door Rollers x 1/2/4/8 Pcs. - Free gift: 6 12 hex stainless steel screw.
5x Partiality Shower Door ROLLERS /Runners/Wheels/Pulleys diameter 19/23/25/27mm
2/4/8 Single Top Bottom Shower Door Rollers Runners Wheels 19/23/25/27 Diameter
4/8 x Replacement Shower Door Roller Runner Wheels 19/23/25/27mm Wheel Diameter
Set of 2/4x Shower screen Door Rollers Runner Wheel 19,23,25,27mm Diameter
Pack of 8 x Shower Door Rollers/Runners/Wheels/Pulleys 19,23,25 or 27mm Diameter
