The NiSi JetMag Pro 100mm Filter Holder Kit is a magnetic filter system designed for use with 100mm wide square filters and the JetMag Pro circular filters. It includes a 100mm holder and a 95MAG magnetic adapter ring, enabling fast setup and precise alignment. The holder locks magnetically to JetMag filters (not the adapter) and rotates 360 degrees for accurate Graduated ND filter positioning. Compatible with all standard 100mm filters, it supports creative control in high-contrast lighting, with minimal vignetting at 16mm when using one filter. Any slight vignetting from stacking can be corrected in post-production.