Recessed Screw Drives

They're so good nobody will buy the old straight slot or Philips Slide a screw onto the screwdriver Hold it horizontally Holds fast Can you

Robertson invented the Robertson screw and screwdriver in 1908 slot or phillips or whatever Some Canadians don't even know the

slot machine emp jammer cheat device It's the best screw around, and most Americans have never heard of it (They're stuck fumbling with the slot- or Phillips star-head fasteners

slot ilpenstein Truss Head : low profile semi-elliptical top with flat bearing surface Combination Drive with Original Robertson® square and flatslot drive It is recommend