The three-hole butterfly clip design breaks through the traditional style and enhances the use limit of the butterfly clip. Made of aluminum alloy hollow.All-aluminum alloy hard thickened oxidized surface treatment, more scratch resistant; 304 stainless steel screw spring; wide and large handle, more convenient and easy to rotate, does not hurt the hand.The diving clamp mount for Diameter 25mm ball compatible with arm like ULCS, Ikelite, INON, SEA&SEA.Material: Aluminum alloycolour: blackPackage Contents:1 x diving clamp mountOnly 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.