Wheel for 23mm Bearing 23x7

The wheels on my rowing machine disintegrated... So I Printed new ones in ABS. These fit exact on a 23mm X 7mm bearing and drive in easily with a board placed over them and a few taps with a hammer. they have stayed in place and work well. I printed on a FlashForge Creator Pro. No Supports, all outside layers increased to 7 layers. They will be lopsided on the outside in ABS if you do not keep the print warm. I pad the outside of my printer to keep the heat in and they came out good and u