The M6 or 1/4” threaded underwater photography accessories offer expandability with ball heads for additional gear. The M6 ball head, equipped with an M6 or 1/4” screw, is universally sized for various attachments like buoyancy arms and underwater lights. The DIVEVOLK housing’s expansion clamp, with two M6 and 1/4” threaded holes, allows for easy installation of the ball head, enabling the addition of more accessories to your waterproof setup. Simplify your underwater photography with this modular and adaptable system.