NAST17ZZ Track Needle Roller Shielded Bearing 17x40x20mmNAST17ZZ Track Needle Roller Shielded Bearing NAST17ZZ Track Needle Roller Shielded Bearing 17x40x20mm NAST17ZZ Track Needle Roller Shielded Bearing 17mm x 40mm x 20mm VXB Bearing NAST17ZZ Track Needle Roller Shielded Bearing 17x40x20mm, Bearing inner diameter is 17mm, Bearing outer diameter is 40mm and Bearing width is 20mm. NAST17ZZ Track Roller Bearing Size: 17mm x 40mm x 20mm Bearing Inner Diameter: 17mm Bearing Outer Diameter: 40mm Bearing Width