koolehaoda QR Quick Release Plate + Metal Clamp With 1/4" to 3/8" Adapter for Manfrotto Benro B-1 J1 Tripod BallHead Manfrotto Arca Swiss Tripod Ball Head Camera Tripod (KZ-30) All-metal materials, CNC precision machining, surface oxidation treatment. Safe Screw installed in both side to prevent drop of camera by accident. With the female thread of UNC 3/8" standard, can be used on virtually any head, tripod or monopod. Universal Quick Release System has been designed to be compatible with other brand quick release systems. Suitable for most ball heads. Compatible with AS standard plate such as: RRS, ARCA--SWISS / KIRK / Wimber ley / MARKINS / SUNWAYFOTO / Kangrinpoche / BENRO / SIRUI etc. Compatible with ballhead tripod or monopod of Gitzo, Manfrotto, RRS, Arca-Swiss