The Spacers is used to adjust the distance of the top part like the picture, Not used with bolts.
Suit for narrow-wide 30~40T chainring(round chainring), 30~38T chainring(oval chainring), Adjustable design
Extremely easy to install and adjust using a single 4mm Hex tool, without removing your cranks.
Support specification: BB Mount. High-strength material, wear and resistance to deformation
Never drop a chain ever again and double your narrow wide chain ring life.

Technical Details

Product Details

Package Dimensions
Width : 2.6 inch
Height : 1.3 inch
Length : 5.39 inch

Shipping Weight: 2.08 ounce (View shipping rates and policies)

ASIN : B074Z43121