Feature:1. CARBON STEEL CONSTRUCTION: The safety wire drill set is made of carbon steel, which is highly hard, wear resistant and scratch resistant, so that it can maintain its shape and precision even under heavy use.2. ENHANCED PERFORMANCE: The upgraded performance and structure ensures that the drill bit will not break when used with the safe line, and improve the working efficiency and service life of the equipment.3. STRONG COMPATIBILITY: The nut bolt drill jig set is compatible with various thread sizes including M6x1.0mm, M8x1.0, M8x1.25mm, M10x1.25mm, M10x1.5mm, M12x1.5mm.4. SAFETY AND FUNCTION: This nut bolt drill jig enables speedy and accurate drilling of bolts and nuts prior to safety wire locking, efficiently eliminating the risk of drill bit slippage or damage during .5. PRACTICAL TOOL: This nut and bolt drilling jig set is an ideal asset to prevent drill breakage during repair work. It is a practical and essential tool for anyone in the automotive and mechanical industries.Specification:Item Type: Safety Wire Drill Guide Kit Material: Carbon SteelFor Thread Size: M6x1.0mm, M8x1.0, M8x1.25mm, M10x1.25mm, M10x1.5mm, M12x1.5mm Fitment: for 1/4in-20, 5/16in-18, 5/16in-24, 3/8in-18, 3/8in-24, 7/16in-14 bolts.Package List:2 x Safety Wire Nut1 x Bolt Jig 1 x User Manual1 x Plastic Box