THE NEW EPB SYSTEM. The low cost solution. VP’s new EPB (economic polymer bearing) System replaces loose ball bearings with specially engineered polymer bearings. This system allows VP to create a more simple, thinner, and lighter pedal for entry level applications. VP pioneered the use of polymer bearings many years ago and now the same proven high-end technology is available as a cost-reducing OEM solution. VP EPB Advantages:Reduced cost due to all in-house production and automatic assembly,Reduced weight,Thinner bodies,Fewer moving parts,Adjustable bearing pre-load,Easily serviced . Material die-cast aluminium ,Polished aluminium or black barrel,Axle 7mm boron steel ,EPB System ,Size 113.5mm x 110.5mm,Weight 425g per pair.