Surly 30.0mm Seat Post Collars S3-PRODUCT_WORKSHOP they designed a completely new

they designed a completely new tooth profile: It prevents the chain from falling off without forcing it onto the teeth

The X4 offers the proven SRAM 2-lever trigger shifting performance in an more affordable price point

with reliable control of applied torque to protect sensitive components

100% Organic Cotton Canvas

and it is also fireproof

Surly 30.0mm Seat Post Collars S3-PRODUCT_WORKSHOP they designed a completely newSURLY 30MM SEAT POST COLLARS Surly 30mm Stainless Steel Seat Post Clamp is cast and polished and won't rust or chip paint because they can't (even the black ones!). They're shiny! They Look Good And most importantly, they deliver the clampability that seat posts crave. COLOURS: Silver Black