This is a pair of standard (no flange, no seal) Duratrax 10 x 15mm Bearings. FEATURES: Ball bearings reduce friction and last longer than bushings. Teflon seals provide protection from dirt and water. Made of Chrome Steel. 90 Day Warranty YOU WILL RECEIVE: Two 10 x 15mm Bearings SPECIFICATIONS: Inner Diameter: 10mm Outer Diameter: 15mm . Thickness: 4mm COMMENTS: To clean bearings use DTXC2458 Power Shot Cleaner. wlg 1/28/97 ir/jl &