Simpson E-Z Base 4x4 Post Base with Black Finish FPBB44 Diablo T20 6-Lobe drive type -

T20 6-Lobe drive type - maximizes torque transfer and reduces driver bit cam-out

which help reduce cam-outs during installation

The ABA46Z is designed for a nominal 4x6 post size

The Simpson CHMXAC35016 features an SDS-Max shank

Simpson E-Z Base 4x4 Post Base with Black Finish FPBB44 Diablo T20 6-Lobe drive type -The Simpson Strong Tie E Z Base Black Powder Coated Post Base for 4x4 (FPBB44) is a retrofit post base solution from Simpson Strong Tie designed to allow easy installation of 4x4 wood posts on existing concrete. Part of the Simpson E Z product line which includes the E Z Base, E Z Mender, and E Z Spike the FPBB44 makes reinforcing and replacing fence posts simple and economical without tearing out existing concrete. Its black powder coated finish