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 & acetate. It includes safety cap. This knife handle also works with No. 10, 11, 12, 16, & 17 blades.