horizontal verticle portable fast does cut drywall tool attachment tape measure

it is a simple tool that clamps on to any standard tape measure and secures a razor knife to the end hook. with it you no longer need to use bulky t-squares or messy chalk lines. you get square cuts and straight rips every time. simply hold the tape, at the required measurement against the drywall board. while gripping it with the other hand just slide down the board for straight rips or square cuts each and every time. it