Toolcraft-55-Piece-Socket-Spanner-Set-frac 14-&-frac 12in-Drive-Toolcraft-826372-P-The-sockets-in-this-set-are-designed-such-that-the-torque-is-applied-to-the-flats-of-the-nut-or-bolt-rather-than-to-its-corners-This-ensures-higher-power-transmission-plus-the-edges-of-the-nut-are-undamaged-especially-when-high-torque-is-applied-P-P-The-sockets-are-made-from-Chromium-vanadium-steel-&-are-easily-removed-from-the-ratchet-handle-by-means-of-a-push-button-P-Toolcraft-826372-Socket-Se