VESSEL 910HD-73 NMC-2P Bit Magnetizer/Demagnetizer Screwdriver Handle, Pack of 2

For precision bits, ø4mm wing shan training, Package size / length: 122 mm, width: 48 mm, height: 23 mm, Round shaft: 6.4 mm, orresponding size / hexagonal axis: 6.35 mm.