Made of aluminum alloy material with a hard anodized body for high precision and durability. Function: Connects securely with ball heads to attach fill lights, diving flashlights, arms, or action cameras for both normal and underwater photography. Features: Constructed from aluminum alloy, corrosion-resistant, and capable of 360-degree rotation for multi-position adjustment and secure fixation, allowing flexible control over lighting direction. Usage: This ball clamp is designed to connect two arms, base adapters, and strobes. Compatible with 1-inch ball arms for Hero 5, 6, 4, 3, and other 4K action cameras. Ergonomic Design: Features an ergonomic handle shaped to fit naturally in the hand, made of resin for improved grip and ease of operation. Enables connection of multiple diving accessories with greater freedom in positioning. The standard clamp holds two 1-inch diameter balls. Reinforced thick plates offer an optimal balance of strength and range of motion. Spring-loaded plates allow quick and easy assembly and disassembly of your arm system. Equipped with a hard anodized aluminum wing nut for reliable, one-handed operation and long-term durability. Compatible with various 4K action cameras. Color: Black. Material: Aluminum alloy. Package Contents: 1 x Ball Head Butterfly Clip. Note: Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.