Alpha 52 Disc Driver Body Type:Shimano Micro Spline The AERO II Disc Mixed

The AERO II Disc Mixed Depths Wheelsets is designed with a 23mm wider inner width

The only real difference is the 350S is more affordable

Nipple  Alloy  Color: Black Cassette Compatibility  Shimano 11 speed Wheelset Weight Total: 1388+-20g (Centerlock

Front: 1093g +-15g

Sapim Secure Lock Nipples

Alpha 52 Disc Driver Body Type:Shimano Micro Spline The AERO II Disc MixedAlpha 52 Disc wheels are new arrival with 21mm inner width, supporting wider tires. It offers an unbeatable combination of affordability and training performance. Featuring a 6 pawl freehub for reliable engagement, it offers unbeatable value for your money. In addition, there is optional ceramic bearings for enhanced durability. Affordable price 6 pawl freehub, 72 engagements Ceramic bearings (option) 27. 3mm external width, 21mm internal width Gravel