Plastic Hand Tighten Nuts Handle Thread Star Black Thumb Nuts Quadrilateral Knob Manual Clamping Nuts. Tool-Free Hand Tightening: Convenient and quick hardware tools for screws and nuts without requiring additional tools. Customizable Color Options: Available in Black with colorable options to meet specific aesthetic requirements. Diverse Material Selection: Made from PP, ABS, PA plastics with metal cores like Iron plated with white zinc or SUS304. OEM and ODM Services: Supports full customization, minor customization, and flexible customization from samples or designs. Metric and Imperial Sizes: Available in various metric (M4-M12) and imperial (1/4-2') thread sizes for broad compatibility. 100% Quality Inspection: Every finished product undergoes visual and functional inspection by packing staff before shipment. Fast Delivery Time: Estimated delivery within 7 days for standard orders, with peak/off-season lead times within 15 workdays. Flexible Payment Terms: Accepts LC, T/T, and D/P payment methods to accommodate different business needs.