Number of Pack: 2 Pcs Ball Bearing Double Seal Effectively Saves Grease and Prevent Impurities From Entering. Dimensions: 15x42x13 mm (6302-2RS) Compatible with: DeWALT: DW706 Type 1 12 Dual Bevel Miter Saw, DW708 Type 1 Crosscut Miter Saw, DW708 Type 3 Crosscut Miter Saw, DW708 Type 4 Crosscut Miter Saw, DW716 Type 1 Miter Saw, DW716 Type 2 Miter Saw, DW718 Type 1 Miter Saw, DW718 Type 2 Miter Saw, DW717 10" Miter Saw, DW716 Type 3 Miter Saw, DW718 Type 3 Miter Saw, DWS780 Type 1 12in Compound Miter Saw Pre-Lubricated and Stable Performance and Cost Effective, Deep Groove Ball Bearings.