FUNCTION: Can putting two photo equipment devices together, full of adapter set, no need buy other camera adapter with these adapter set. APPLICATION: Fit for most dslr camera/ tripod/ monopod / ball head /flash light stand/ shoulder rig camera accessories. CONVENIENT: Help you gain more rig combination possibility and freedom in your photo . Solid and Durable. 1/ 4 inch to 1/ 4inch Male To Male Screw Adapter: Length: 20 mm/0.8in Width: 16 mm/0.6in 1/4 inch to 3/ 8 inch Male To Male Screw Adapter: Length: 20 mm/0.8in Width: 16 mm/0.6in 1/4 inch to 3/8 inch Screw Adapter Converters: Height:7mm/0.3in colour:Silver Material:metal Package Contents: 3 * 1/ 4inch to 1/ 4inch Male to Male Screw Adapter 3 * 1/ 4inch to 3/ 8inch Male to Male Screw Adapter 4 * 1/4inch to 3/8inch Screw Adapter Converters Only the above package content, other products are not included. Note: Light 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.