1615-2RS rubber seals bearing 1615-rs ball bearing 7/16" x 1-1/8" x 3/8" 1615-2RS rubber seals bearing 1615-rs ball bearing 7/16" x 1-1/8" x 3/8" Radial (Deep Groove) bearing Quality bearing Material: Chrome Steel (Gcr15) Closure:Both side rubber seals