Trend Trade Door Leading Edge Router Cutters Shank Mounted Bearing Guided Door Leading Edge TR38X8MMTC - 3 Degrees Undercut x 38.1mm Cut Key Features: 3 degree undercut router bits for routing a leading edge on doors to allow a tight fit against jamb 8mm shank for medium or heavy duty routers only Specification:​ D: 19.3 mm (metric diameter) C: 38.1 mm (metric cut length) OL: 89 mm (overall length) B: 16 mm (metric bearing diameter) A: 3 degrees (angle) Shank Diameter: 8 mm