Impact BHE-102 Heavy-Duty Flex Arm for Super Clamp Ideal For Supporting Small Video Lights, Speedlights, Reflectors Or Other Items Designed To Fit SuperClamps | Aluminum Construction | 21.65" Long | 1.1 lb Load Capacity 5/8" Hex Stud with female 3/8" Tap | 5/8" Stud with 1/4"-20 Screw Limited 1-Year Warranty