Precision metal screws, silver plated, standard tripod mounting thread Help you connect rigs of screw thread within minutes; Can connect tripod, shoulder rig, lightstand, micro-film equipment, camera cage and others Help you gain more rig combination possibility and freedom in your photo .diameter:0.62 inch/16 mm; . length: 0.78 inch/20 mm; , easy to carry and use, they can even as back up for the counterpart in your rigs in both versatility and functionality These 100 pieces screw adapter are made of metal with sturdy construction; There is in both versatility and functionality. Style: 1/4 inch Male to 1/4 inch Male colour: Silver Material: Metal Package Contents: 100 x Screw Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.