Metric bolt drill jig provides six drill holes for metric sizes รป 6 x 1.0, 8 x 1.0, 8 x 1.25, 10 x 1.5 and 12 x 1.5 bolts Nut drill jig allows the safety wire holes to be drilled through the head of bolts or through nuts It will accept up to a 3.5 mm diameter. JIG KIT SAFETY WIRE