NB SM35GUU-OP 35mm Slide Bush Ball Linear Motion BearingSM35GUU OP Type Open Seals on Both Sides: Slide Bush Made in Japan: NB Linear Systems Nippon Bearing Linear Systems SM35GUU OP Linear Slide Bush, bearing is open, It is seals on both sides, it is Retainer material is resin, bearing is a high accuracy grade linear bushings, series mainly used in the USA, NB brand (Nippon Bearing Linear Systems), made in Japan. SM35GUU OP Bearing Linear Slide Bush Retainer Material: Resin Shaft Diameter: 35mm Number of