Simpson - Quik Drive TU250G2 ( QDPRO250G2 Subfloor Attachment )Simpson Quik Drive TU250G2 ( QDPRO250G2 Subfloor Attachment ) AutoFeed Attachment drives 1 1 2" to 2 1 2" sub floor and deck screws Extension with adjustable easy grip handle G2 Adapters for DeWalt and Makita Screw guns Improved Ergonomics Effortless Breakdown and Assembly Deeper Countersink, More Versatile Toenailing Easier Bit Changing, Smoother Drive IN THE BOX AutoFeed Attachment Extension with adjustable easy grip handle G2 Adapters for DeWalt