Knife features an aluminum handle with a textured grip area. Sleek design fits comfortably in the hand, allowing you to continue making the precision cuts needed to finish the job, no matter how long it takes. No. 1 knife is designed for delicate precision cutting of lightweight material like plastic, paper, balsa, cloth, thin metal, film and acetate. It includes safety cap. This knife handle also works with No. 10, 11, 12, 16, and 17 blades.