Simpson #2 Undersized square Quik-Drive Driver Bits BIT2SU Boring Bits Best choice when upper-face finish

Best choice when upper-face finish quality is critical

making it ideal for a wide range of framing and repair applications

Wet-set concrete column base installations

Chamfering

The ABW44Z is approved for installation with 10d common nails or #9 x 1-1/2 in

Simpson #2 Undersized square Quik-Drive Driver Bits BIT2SU Boring Bits Best choice when upper-face finishSimpson #2 Undersized Square Quik Drive Driver Bits by Simpson are purpose built replacement driver bits designed to deliver consistent, reliable performance with Quik Drive screw driving systems. The #2 undersized square drive profile ensures a secure fit with compatible Quik Drive screws, reducing cam out and driver wear so fastening stays controlled and efficient whether you are working with deck boards, subfloor panels, or other demanding