Description: Durable Construction - Our left-hand hex head bolts are made of carbon steel with black oxide surface treatment, which provide excellent strength, corrosion resistance and long-term durability. They are not easy to deform and suitable for long-term indoor and outdoor use. Design - These bolts feature a hex drive, left-hand reverse thread design for applications that require reverse threads, providing a secure fit to prevent loosening during operation, can meet most of your fastening needs, and provide strong stability. Easy to Use - Our left-hand hexagon head bolts are simple and convenient to install and remove. They can be tightened by turning counterclockwise and loosened by turning clockwise, making them very easy to use for professionals and DIY enthusiasts. Wide Application - Our hexagon head bolts are widely used in various industries such as the construction industry, petrochemical industry, new energy industry, and shipbuilding industry. They are very suitable for machinery, automobiles, and construction steel pipe fasteners and connecting nuts. Specifications Material: Carbon Steel Finish: Black Oxide Color: Black Size: M10-1.5 x 50mm Pitch: 1.5mm Thread Diameter: 10mm/0.39" Thread Length: 50mm/1.97" Total Length: 56mm/2.2" Hexagon Width: 16mm/0.63" Package Content: 4pcs x Left Hand Hex Head Bolt