This stage features a 125mm x 170mm work surface with stage clips and a 94.5mm diameter clear glass stage plate for use with transmitted light stands. Roller-bearing mount allows smooth, easy, fingertip control over 100mm x 100mm x-y travel. Mounted in a 94.5mm well. (Not intended for use with PBH, ABH, ABE, ABZH, PK, PKC stands.)