This crankset from Quark is used with their spiders where the wattmeter sits.

So this is just an axle and pedal arms.

The pedal arms are 172.5mm.

The axle is made for DUB and can therefore be used on a wide range of frames as long as a DUB crankcase is fitted.

To use this wattmeter, you need a spider that is mounted with 8 screws on the crankset.

The pedal sleeves are made of carbon.