WORKS AXLE BLOCK YAMAHA BLUE 17-031

WORKS AXLE BLOCK YAMAHA BLUE 17-031. The vendor part number is 17-031. Read title carefully to know what you are getting. Here is the catalog descrion NOT the title?

• CNC MACHINED 6061 T-6 ALUMINUM AXLE BLOCKS OFFER TIGHTER TOLERANCES TO HELP INSURE ACCURATE ALIGNMENT OF THE REAR WHEEL SO CRITICAL TO PROLONGING CHAIN AND SPROCKET LIFE
• REVERSIBLE DESIGN TO KEEP YOUR AXLE ADJUSTMENT BOLTS FROM EXTENDING BEYOND THEIR SERVICE RANGE
• MADE IN THE USA