Sliding magnet system provides bolt clearance and magnetic function at the same time. Input Drive Size: 1/4" Drive Shape: Hex length: 100mm Type: Nut Setter with Sliding Magnet Output Size: 12mm Opening: 6pt Slide Magnet: Yes Product Dimension (Refer Line Drawing Image): D Size: 17mm H1 Size: 6mm H2 Size: 26mm L Size: 100mm