Lock and key for adding detail to your models. Key is molded with filets and rounds on all edges except for the cut area.Very good for close-Up 3D Illustrations. Built in 3DS Max 6., and exported as a 3DS file. Opened, checked, and rendered in Maya 7.0 to test export integrity. NOTE 3DS is an export format and some slight smooth group adjustments should be anticipated in this format.