12 Pack 1/4-20 Black Star Knobs Star Hand Knob Threaded Knurled Thumb Nuts Thumb Screw Knobs with Bolts for Umbrella Base Replacement Female Threaded Hexagon Head Thru Knob

Additional Details from the Manufacturer

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More features

• 【Durable Materials】These black star knobs are made of plastic and durable metal with a smooth burr-free surface, ensuring long-lasting performance and comfort during use
• 【Versatile Size】With a 1/4-20 male thread type, a 25mm head diameter and a 20mm screw length, these black knobs clamping screws provide a secure clamping action suitable for a variety of applications
• 【Ergonomic Design】The special star-shaped design provides an ideal grip, allowing for better control and precision when adjusting, easy to operate and use
• 【Wide Application】Ideal for automotive roof treatment boxes, woodworking clamps, workshop equipment, etc., these star threaded knurled thumb nuts are designed to easily fit into small spaces
• 【Secure Fastening】The hexagonal clamping knob handle provides excellent tightening control, ensuring safe and effective screw adjustment without scratching your hands