BMX Gyro Hollow Pin Expander Bolt And Wedge Cone For 21.1 BMX Handlebar Stem

• Hollow centre bolt for gyro type handlebar stem with wedge-shaped cone and washer.
• This will suit the majority of BMX handlebar stems.
• Hollow expander bolts are designed  so you can feed your front brake cable through the middle of the stem, allowing complete rotation of the handlebars on bikes with gyro system 
• M10 thread
• 160mm length (168mm including hex head)
• 21.1 wedge-shaped cone