absoluteBLACK Direct Mount Narrow Wide Chainring - SRAM Direct Mount - 3mm Boost - Oval - Black - 9-12 Speed - 28T PLP|Colour 10mm size is sold as

10mm size is sold as a set of 4 bolts only (no nuts) for threaded 104 x 30T chainring

it is TLD quality

5mm - 45x45

then the Crane E-Ne is the one and only

Weight: 84g

absoluteBLACK Direct Mount Narrow Wide Chainring - SRAM Direct Mount - 3mm Boost - Oval - Black - 9-12 Speed - 28T PLP|Colour 10mm size is sold asabsoluteBLACK 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