High Quality self defense products like the Bone Two Finger by Azan are now available for everyday security and use. This is a pocket sized defensive knuckle that is light weight and unsuspecting. The High Impact ABS construction meets structural integrity to produce a lifetime of personal security. Overall Length: 2.6 Inches. Finger Hole Size: 1.03 Inches. Material: High Impact ABS. Thickness: 10.29mm. Color: Flat Black.