SAFETY FASTENERS Non standard design is adopted for the tightening and opening of bolts and nuts,and thematching non-standard tools are used to solve the opening and tightening Has played a very good anti-theft effect Customized Hot-sale Product Plum blossom anti-theft nut triangular groove Safety nut 4-hole anti-theft nut Pentagonal anti-theft Safety Torx Safety LOCK NUT Double Torque Safety Nuts Cutting anti-theft nut Sector One-way Safety Nuts Pentagon Safety Slotted Bolt Double Torque Bolts Multi Tool Safety Bolts One Way Safety Screw 4-angle Bolts With Column Single Hole Safety Bolts Herringbone groove bolt Three hole Safety bolts 4-hole Safety Bolts Double Hole Safety bolts 5 Torx Safety Bolts Triangular Groove Safety Bolts More customization