Round shape gives more stability and comfort when fishing Comes with washers East install--no drilling required! No bearings included Fits STL1000FJ, STL2500HGFJ, L4000XGFJ, STLC3000XGFJ, STLC5000XGFJ Jigging World Type A 34mm Aluminum Knob Fits: STL1000FJ STL2500HGFJ STL4000XGFJ STLC3000XGFJ STLC5000XGFJ Features Round shape gives more stability and comfort when fishing Comes with washers East install--no drilling required! No bearings included, can be installed using all original parts