26" CENTRE LOCK DISC REAR WHEEL SHIMANOFH -TX505 559 -19RIM. SHIMANOFH -TX505 REAR 8/9/10 SPEED CASSETTE HUB 135mm OVERLOCK NUT DISTANCE WITH QUICK RELEASE AND CENTRE LOCK DISC MOUNT HUB. MACH1 NEUTRO 559 – 19 6063 ALUMINIUM 20mm DEEP SECTION RIM FOR DISC BRAKE ONLY, WITH EYELETS AND SCHRADER 8mm VALVE HOLE.