NBK Made in Japan BRDH-12 Hexagon Head Screw Type Ball Transfer Unit for Downward and Sideward Facing ApplicationsBRDH 12 Hex Head Type Ball Transfer Unit for Downward and Sideward Facing Applications Part Number M L L1 s Db B Withstand Load (N) BRDH 12 12 20 21 5 15. 88 24 900 BRDH 12 ball rollers can be used in downward and sideward applications such as with casters of push carts for transport, FPD production equipment, semiconductor devices, food production lines, and packaging lines. A dust proof seal prevents the ingress of dirt and dust. The body, main