Allows nut and bolt to be drilled to take locking wire.
Use with 3.5mm drill (not supplied). For use on 6mmx1.0mm, 8mm x 1.0mm, 8mm x 1.25mm, 10mm x 1.0mm, 10mm x 1.5mm, 12mm x 1.0mm, 12mm x 1.5mm bolts. Safety Wire supplied separately
