Metal 1/4" to 3/8" Convert Screw Adapter for Tripod Monopod Ballhead DSLR SLR (1pcs) Product Name: 1/4" to 3/8" Convert Screw Adapter Made of copper, with the surface of white plating, wear-resistant and durable Thread Adapter with female 1/4" thread to male 3/8" thread. 1/4" to 3/8" convert screw adapter for cameras, tripods, ball heads, light stands, flash brackets and monopods etc. 1 pieces pack