Shank Diameter: 8mm, Cutting Diameter: (12.7mm)1/2", Blade Height: 25mm(Please receive the promo code on the product page when purchasing to get a price more advantageous.)_x000D_The upper and lower rolling router bit is great for all your large stock trim applications_x000D_This bit can be used with an upper or lower jig. useful for jig work when routing rounded or sinuous lumber with sensitive end grains_x000D_Cutter: CNC milled to 600 grit, mirror finish_x000D_Tip Carbide - Micro grain grade provides increased strength and greater resistance_x000D_Size:8mm Trim Router 25mm Blade_x000D_Features:_x000D_Low bit Rolling top and bottom router is great for all your common large trim applications_x000D_This bit can be used with a top or bottom jig. Particularly useful for jig work when routing rounded lumber or sinuous with sensitive end grains_x000D_The upper and lower bearings allow you to turn the wood over when you reach the up grain and unroll it in a down direction, maintaining uniform smoothness around the workpiece_x000D_Cutter: CNC milled to 600 grit, mirror finish_x000D_Hook and shear angles: High hook and shear angles allow knives to cut easily in stock, producing a clean, splinter product._x000D_Bearing: fully enclosed and lubricated_x000D_Coating: Baked on a heat-resistant coating to prevent accumulation of sawdust, resin and pitch._x000D_Balance: tolerance of +/- .003" (allowing good operation at high rpm)_x000D_Specification:_x000D__x000D_Body: Solid hardened steel_x000D_Blade: Industrial grade micro grain carbide_x000D_Shank diameter: approx. 8mm_x000D_Cutting diameter: approx. 12.7mm (1/2") Total length: about 87mm_x000D_Blade height: about 25mm_x000D_Quantity: 1pc_x000D_Application:_x000D_Be used with a higher or lower template. Particularly useful for jig work when routing rounded or twisted wood with sensitive end grains._x000D_Contains:_x000D_1 x 8mm Flush Trim Router Shank