Item No NVK-5938 Description Novak's Steel Ball Bearings ABEC-5 (3/16"I.D. x 1/2"O.D. x 0.1960"W) [#5938] include high-performance steel balls. These bearings also serve as replacement front bearings for Novak's Ballistic, Velociti and SS Pro Brushless Motors. These bearings are oversized and hard to find.