They say size doesn’t matter but when it comes to ground anchors it does. This thing is a beast & will take 14mm chain link diameter & possibly 16mm. It comes with the securing expansion bolts, an allen key & ball bearings to thwart a determined thief. I’d recommend a 17mm or 18mm SDS drill bit for the holes needed for the bolts. I used a 6mm allen socket on a 3/8 drive ratchet to tighten the counter sunk bolts as this gave a nice tight fitting. Due to my situation I fitted the anchor to a wall rather than the ground & all fixings went into the meat of the bricks rather than the mortar line. Over all I’m pleased with the product & would recommend.