Material: Made of carbon steel, copper plated to form a stable oxide film on the surface, anti corrosion, anti rust. | Color: Smooth rivet, hard and stable, beautiful color, noble and generous. | Usage: Elaborately dual head screw, can easily bind or remove with a simple standard screw driver. | Applications: Suitable for all kinds of leather craft, such as belt, bag, shoes, cloth, leather bracele

Quantity and Size: 25pcs Hex Socket Insert Nut, Internal Thread Size: 5/16"-18; Nut External Diameter: 13.8mm, Length: 1"(25mm) | Material: Made of high quality zinc alloy, with good room temperature mechanical properties and wear resistance, can keep thread integrity after multi times use. | Color: Zinc alloy color | Usage: Pre-drill (drill a proper hole, suggest 12.8 +/- 0.2mm), screw in with internal hex tool. Unique self-tapping designed external thread, contribute to tapping, with good tensile resistance, can effectively prevent stripped. | Applications: Suitable for pine, plywood, fiberboard, etc, have a good effect in the advanced furniture combination.

Made Of high quality 4.8 Grade Carbon Steel. Good elasticity, high hardness, good wear resistance, smooth surface and no burr.Sturdy and durable. | Corrosion Resistance and Anti-rust With Zinc coated .Suitable for indoor and outdoor use and humid environment. | Adopt hairpin design, can fast, safe and effective lock bolt, prevent relative rotation, durable. | Suitable for use with Tractors, Farm Equipment, Trucks, Cars, Campers, Lawn and Garden Equipment, etc. | Model: M4x85. Package Included:5 PCS.

Packing: 1 pair, material: rubber, angle: flat angle. | The inner diameter is 36mm (1.42in), suitable for 32mm (1.26in)-36mm (1.42in) stereo microscopes. | It can block stray light, facilitate observation, protect eyes, and make work comfortable. | Designed to reduce impact, better protect your eyes, and help create the perfect distance between eyes and tentacles. | Suitable for stereo microscopes.