Description Our best Spring bars. The strongest and the most powerfull ss Spring bars on the Market (also used by ROLEX) Swiss made ss 316 LS Steel. The spezial springs are 3 times more powerfull then on cheap import spring bars, thats very important to make sure the bar will not slide out of the lug hole, available in 1.5 mm diameter and 2.0 mm diameter Always shipped as a pair!