Product Description Press adaptors for sealed bearing installation press.Inner hole sized to fit 3/8" ACME threaded rodSold individually (2 drifts required for some installations) Wheels Manufacturing Open Bore Adaptor Bearing Drift for 6903 Bearings at N+1 Bikes Browse all N+1 Bikes deals $11.00 Out of Stock Price verified 1d ago Buy Now at N+1 Bikes Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand N+1 Bikes N+1 Bikes