The compact Arca-Swiss Compatible Basic Cage from Zacuto offers lightweight protection for your Sony Alpha a7 III, a7 R III, or a9 camera. The cage features an Arca-Swiss style bottom plate that is compatible with the Zacuto Polaris 15mm LWS baseplate as well as select third-party systems. This basic cage has built-in, NATO-compatible Z-Rails on its top and left side for quick mounting of separately available handles. The right side of this "no-cage" cage extends just far enough to enable the use of both your camera's handgrip and the included padded hand strap.