Godox Q-Type Multifunctional Clip Clamp Battery Pack Bracket With 1/ 4 and 3 / 8 Bracket Holes For Battery Pack Studio Light Flash Speedlite PB820 PB960 1.Designed to hang battery pack,install different flashes 2.Several 1/ 4 and 3 / 8 bracket mounting holes to adjust light ankles flexibly. 3.Utilizes a unique ball and socket head for quick and easy adjustment 4.Ajustable range from 3mm to 45mm,High quality material with strong bearing. 5.NOTE:You need buy another screw when you use this item with photography accessories except power pack.