The Decor Cranked T Handle in 30x150x400mm size in Black (F413BLK) is a door hardware product that is typically used for residential or commercial doors. It is designed to be easily grasped and turned to open the door. The cranked handle design allows for a comfortable grip and easy operation, and the T-shaped handle provides a large surface area for the user to hold onto. This handle is made of high-quality materials and is finished in a sleek black color, making it suitable for a range of interior design styles. It is typically used on doors that open inward or outward, and it is typically mounted on the face of the door. If you have any further questions about this product or its installation, it is best to consult the manufacturer or a qualified door hardware professional.