For temporarily mounting GUARD DOG® heavy-duty five-channel cable protectors, Checkers has added four through-holes with an inside diameter of .21-in. that can be used with either nails or screws. Pry slots under each through-hole simplify removal. An optional rubber pad kit supplies increased traction. These modular, interlocking protectors provide an easy way to protect and route valuable cables, hoses and electrical lines.Checkers Industrial Safety Products,, (800) 438-9336.