I just needed a single 4mm ball bearing to help stabilize my Fender Stratocaster's trem arm. This system involves a small spring that Fender makes too. Drop the spring into the trem arm receptacle, drop the ball bearing on top of it, and screw in the arm. Works great. Some say that all you need is the spring, but that wasn't true in my case. [Modern 2-point Fender trem with non-offset bent-steel saddles.] I ordered 4 spares too. Being able to order such a small number of ball bearings was a surprise. Thanks! Joey
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Excellent service!
November 3, 2021
Reviewer:
Leslie Papp from Victoria, BC Canada
I was very pleased with the excellent service provided for my online order. The ball bearings I ordered arrived 2 days earlier than expected.
Very small order. No problems 
