The biggest difference is the convenience of using a battery operated drill rather than a hammer. This means you can easily construct fences with two hands rather than three and no more bruised thumbs.
The Gaffer Fence Staple and the Gaffer ‘8’s have been designed to attach barbed wire, plain wire, sheep wire, netting wire etc. to fencing posts, hedges, saplings and trees.
The use of a pozi-drive screw attached to a battery operated drill with a magnetic bit holder (one that has two magnets), which holds the screw and staple in place, allows the user to attach the staple using a single-handed operation.
The Gaffer Staple is used in intermediate posts and the Gaffer ‘8’ is used at the end post to hold the wire taut.