Not only are they attractive and functional, our Ultra-Low Profile Bottle Cage Bolts weigh 1.2g each or 5g for a set of four. That's pretty darn light.

A note of caution: These bolts won't be for everyone. In order to achieve such a low head while maintaining bolt strength, these bolts use a 2.5mm hex. That means that care must be taken and the following are required for installation:

• High-quality 2.5mm hex bit in good condition
• Copper anti-seize compound or dielectric grease
• Torque wrench set no higher than 2-3Nm

In addition, it is wise to remove and re-grease the bolts annually to prevent seizing. Re-grease more often if you sweat heavily, have leaky bottles of electrolyte drink, or ride on salted roads (or near the sea).

How does Titanium Anodizing Work?

Titanium anodizing uses electrical current to manipulate the thickness of the oxide layer on the surface of titanium to produce what is effectively an illusion of color. That oxide layer gives the perception of color by changing how light is refracted. Light reflects from both the oxide layer and the underlying titanium at different angles and those reflections interfere with each other, canceling out certain wavelengths of light.

Unlike aluminum anodizing, no dyes are used, so Ti anodizing won't fade with UV exposure.

Pretty neat, eh?

That said the appearance of certain anodized titanium colors (we're looking at you, bronze, blue, and purple) can be impacted by certain solvents or oils on the part surface. So if your bolts are looking funny, give 'em a good clean with isopropyl alcohol and they should be back to normal once dry.