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TWJ4UU NB 1/4" inch Ball Bushing Adjustable Block Linear Motion
Twj4uu NB Type:Slide Unit
Made in Japan:NB Linear Systems
Nippon Bearing Linear Systems
3/8" Slide Unit Pillow Block (Inch Series), the innerdiameter(bore) is inch dimensions with steelretainer, bearing is a high accuracy grade linear bushings,series mainly used in the USA, NB brand (Nippon Bearing Linear Systems), made in Japan.