Set of 4 square drive screwdriver bits (decking screws)1 each Nos. 0, 1, 2 and 3

Square drive (Robertson pattern) bits are widely used in security screws and especially for decking screws. Set contains 1 each No.0, No.1, No.2 (the most common for decking screws) and No.3. Professional quality, No.1 and No.3 made in Germany, no.2 in Taiwan.

eBay