Universal 4mm size can fit with majority of the photography accessary’ screw. 3-IN-1 Small Tool Hook: With the 4mm Hex Wrench, Handy 7mm Hex Socket, Slotted Screw Tool, this tool hook can satisfy your needs for repairing your tripod or monopod simply.

Tool Hook Red, Multifunctional 3-in-1 Hex Tool with 4mm Hex Wrench, Handy 7mm# Hex Socket, Slotted Screw Tool, Aluminum Tripod Allen Wrench Kit. 3-IN-1 Small Tool Hook: With the 4mm Hex Wrench, Handy 7mm Hex Socket, Slotted Screw Tool, this tool hook can satisfy your needs for repairing your tripod or monopod simply.