- The Stanley Fatmax 22-piece Impact Torsion Bit Set is a powerhouse addition to your toolbox, ideal for use with all power tool brands - With 50 mm length, these bits give you extra reach for those tight or awkward spots - The precision-fit heads stop your screwdriver slipping or chewing up the screw - Your impact bits stay secure during use thanks to the ring magnet collar - With a mix of Phillips, Pozi and Torx, this set has you covered for everything - The stackable case with transparent lid keeps your bit organised and easy to find at a glance