six high-quality M4 threaded knurled thumbscrews. Each screw is meticulously crafted from durable aluminum alloy and finished in a striking red color, ensuring both functionality and aesthetic appeal. Dimensions and Material: Each thumb screw features a thread diameter of 4mm and a thread length of 0.39 inch (10mm), with overall dimensions of 0.87 inch x0.47 inch (22x12 mm). The aluminum alloy construction provides a lightweight yet robust solution for your fastening needs. Enhanced Grip Design: The knurled surface of these thumb screws offers superior grip, facilitating easy manual adjustments without the need for tools. The threading is precisely cut to be neat and uniform, ensuring a smooth installation and a secure fit. Easy Installation: Designed for convenience, these thumb screws feature a screw-in design that makes installation straightforward. Simply twist them into place by hand, no tools required, making them ideal for quick adjustments and setups. Versatile Use: Perfect for a wide range of applications, these knurled thumb screws are ideal for securing components in electronics, machinery, and hobby projects where frequent manual adjustments are necessary. Their striking red color also adds a touch of style to any assembly. Colour: Red Material:Metal Package Contents: 6 x Threaded knurled thumbscrews Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.