dual lip seal riding in a groove on the inner race

While they are lightweight

Bite Valve with straight connector for high performance situations

6mm alloy tube construction

keeps lenses cleaner

absoluteBLACK Direct Mount Narrow Wide Chainring - SRAM Direct Mount - 3mm Boost - Oval - Black - 12 Speed Shimano - 32T Ignore Wholesale Tier 2 Brand Rule dual lip seal riding inabsoluteBLACK is dedicated to producing the world's finest oval chainrings and were the first to crack the code to discover the correct shape and 'clocking' to make an oval chainring work. They learned how to maximize the part of the stroke where power is produced and minimize resistance where it isn't. The oval shape smooths the delivery of power throughout the pedal stroke and improves efficiency and energy conservation. Many other brands have