M.T.C.W. Line Roller Handle Knob BB Open 4x7x2.5

Seawater resistan.
The requirements for ball bearings used in reels that are important to anglers are very high.
We have prepared open type bearings with excellent maintenance properties, ball bearings with the same dimensions as the manufacturer's genuine products, and HRSBB.
When fishing in the sea or playing in the rain, water may penetrate into the inside of the bearing.
This bearing achieves greater corrosion resistance and higher load performance than previous bearings.