ITEM NAME:2 Pcs Axial Ball Thrust Bearing 51104 20 x 35 x 10mm M7R1 2 Pcs Axial Ball Thrust Bearing 51104 20 x 35 x 10mm M7R1 Product Name : Thrust Ball Bearing Model : 51104 Inner Diameter : 20mm / 0.79" Outer Diameter : 35mm / 1.38" Total Thickness : 10mm / 0.39" Package Content : 2 x Thrust Ball Bearing Color : Silver Tone Materal : Carbon Steel Weight : 78g The universal Ball Bearing is great for you to replace damaged Ball Bearings to improve efficiency and save energy. Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm..Model : 51104. Total Thickness : 10mm / 0.39".