version zbrush 23 and higher.
The format is OBJ, STL,ztl,fbx.
model for printing on a 3d printer
STL (Stereolithography, filesize: 500 MB), OBJ (OBJ, filesize: 350 MB), MA (Autodesk Maya, filesize: 579 MB), FBX (Autodesk FBX, filesize: 220 MB), ZTL (Zbrush, filesize: 161 MB), OTHER (Other, filesize: 81.9 MB), BIP (KeyShot, filesize: 1.93 GB), MAX (Autodesk 3ds Max, filesize: 931 MB)