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I was worried the bristles would be too stiff for switch rails, but they're fine enough to catch every corner without flinging lube everywhere. Consistent coverage on the stabilizer wires took me half the time it used to.

These brushes let me actually see how much lube I'm applying, which was my main struggle before. They're stiff enough to spread the grease precisely on the switch rails without bending. My stabilizers finally sound consistent after a single pass.