I haven't installed this yet, but it looks sturdy and should make for a sturdy post. I'll revise this if I find otherwise when I install this in the next week or so. NOTE: Some people wonder if plastic/pvc/vinyl post sleeves will fit over this anchor. The sleeve will NOT fit over, nor inside, this anchor if the sleeve is meant to contain 4x4 posts; it will fit *inside* this anchor if the sleeve is meant to contain two 2x4 laminated together. This arrangement will be acceptable to us (so we can reuse the sleeves we have from a deceased railing we had; we may paint the anchor white if we decide we don't like the contrast of the black anchor with the white sleeve.