This is a pack of ten 5x12x4mm metal shielded “Speed” ball bearings. ProTek R/C “Speed” bearings are high quality steel/chrome bearings designed for the R/C racing enthusiast.
ProTek R/C is an AMain Sports & Hobbies brand.
This product was added to our catalog on December 18, 2008
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Anonymous Verified Owner Saturday, Sep 19 2009 (about 16 years ago) ProTek RC 5x12x4mm Metal Shielded “Speed” Bearing (10) I decided to give these bearings a shot and man am I disappointed. Went through 6 bearings in one day. Save your money and go with another brand. 0 of 1 customers found this review helpful. View all reviews
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