1、Flush Router Bit is made of high quality cast steel and carbide tipped to confirm a long cutting life, which is featured with impact resistance and wear resistance. 2、Flush Router Bit is usually use on electric wood routers or engraving machines for wood edge finishing. 3、This ball bearing shank can be applied for 1/4 trimming machine handle, and it can be used for smooth trimming of wood and paneling. 4、The straight flush trim router has a high hardness to provide a quick and smooth cutting, and double-edged flutes makes you cutting faster. 5、Flush Router Bit is support for precise flush trimming of your wooden edges. Description: Material: Cast steel + Carbide Tipped Flutes: Double-edged Uses: For 1/4 trimming machine handle can be trimming Size: 1/4 x 1/4"(6mm) Blade diameter: 7 depth: 20 1/4 x 5/16"(8mm) Blade diameter: 8 depth: 20 1/4 x 3/8"(10mm) Blade diameter: 9.5 depth: 25 1/4 x 1/2"(12mm) Blade diameter: 12.7 depth: 25 Package includes: 1 x Bearing Flush Trim Bit Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.