Ceramic W&H Bearing With Shielded 8 ball radial deep groove bearing. Two Required for most installations. Application: 3,175x6,35x2,78 [.125"x.250"x.109"] Most W&H and Sirona Models, On Bien Air Ondine and Prestige Models please use with our front or rear bearing brass cup (search above under CUP). Gold shield noise canceling seals out debris and promotes quiet operation. 2 required.
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