BSD Walla Sprocket Terrible One if you're looking for a

if you're looking for a clean and refined topload stem that won't let you down

classic comfortable geometry

this design eliminates several weak points found in traditional tubular cranks

micro style pedal that utilised the loose ball bearing system with a crmo spindle

variable stack heights between 16-22mm possible

BSD Walla Sprocket Terrible One if you're looking for aThe BSD Walla Sprocket is built tough, like a brick outhouse! Hence the all over brick wall graphic. Built from fully 3D CNC machined 7075 T6 alloy with a dual thickness construction that's 8mm thick at the edges and tapers to 6mm at the center to help save weight. A 15 16" center hole as standard can fit on all cranks with the supplied 19mm and 22mm top hat washers. ###section### Product Specs TYPE: Bolt On MATERIAL: Alloy WEIGHT: 90. 7g (3. 2oz)