Chainring Bolt in 6.5mm and 8.5mm silver. For your single and double chainring use respectively.
SPECIFICATIONS
Type: Single (6.5mm) / Double (8.5mm)
Colour: Silver
$3.80
$2.90
$15.90
$9.90
$1.90
$17.90
$4.50
$1.90
$18.90
$5.90
6.5mm (Single) 
8.5mm (Double) 
