Simpson ECC3 1 4 6 End Column Cap for 3 1 8 in Beam and 6x Post 7 Ga Steel Gray Paint Grinding and Finishing 11B Pattern Flush Trim Bit with 11B Pattern Flush Trim Bit with Insert Knives is a professional grade routing tool combining flush trimming and pattern routing capabilities in a single 3 4 in Engineered to resist wood member rotation at the base adds stability to structural posts where lateral movement at the connection point could compromise the overall frame beam and nominal 6x post precisely sized for engineered lumber and heavy timber framing at end column positions The Simpson ECC3 1 4 6 End Column Cap is engineered by Simpson to deliver strong