Wera Patio construction set T 1, 17 piecesCompact Wera tool set with the 17 most common screwdriving tools for patio construction. Bits in stainless steel design prevent extraneous rust. With extra smart bit holder, which enables a uniform depth thanks to the variable screw depth limitation, and prevents damage to decking with the fitted felt ring. Features High quality 17 piece tool set for evenly flush countersunk screw heads for decking in patio construction Bit holder with adjustable