ITEM NAME:5pc 1/4" Shank Top Bearing Flush Trim Router Bit Woodworking Milling Cutter Description: - This template hinge mortise bit has a 19mm cutting diameter with a 8mm cutting depth. - This bit's shallow cutting depth and center meeting make it perfect for routing door hinge mortises using a hinge template. - With 1/4" Shank (6.35mm) - Cutting Diameter: 3/4" - Cutting Length: 5/16" - Overall Length: 1-15/16" - Number of Flutes: 2 - Bit Construction: Car.With 1/4" Shank (6.35mm). - Number of Flutes: 2. - Overall Length: 1-15/16". - Cutting Length: 5/16".