Description: 【Smooth】Equipped with high precision bearings, the Rowing Machine roller ensures smooth rotation and effortless rolling, making it ideal for rowing machines, fitness equipment, and other 【Material】: The Rowing Machine Seats Wheel is made of pp material, 0.8cm/0.31inch in hole diameter, 4.3cm/1.69inch in outer diameter 【High Load Capacity】:This Roller for Rowing Machine Seats Cushion Wheel offers good load bearing capacity and smooth rolling performance, ensuring stability during use 【Versatille】Suitable for home gym equipment, window tracks, door frame, and transportation tools; this pulley provides robust support across household, commercial, and industrial settings. 【Easy Installation】: Exercise Machine Attachment can replace old or worn out rollers is quick and straightforward Size Chart: 4.3cmx4.3cmx1.12cm/1.69inchx1.69inchx0.44inch hole:1.86cm/0.73inch outer diameter:1.18cm/0.46inch inner diameter:0.8cm/0.31inch Package Includes: 1 Rowing Machine Seat Wheel Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.