Ibex Standing Up Feeding, STR, CM5 7/8 x 18 1/4 x 35 1/2 x 49 1/2By Bill Neuman McKenzie forms are anatomically accurate and feature positive-set eye sockets. Reproduction horns and rock bases are available for Ibex mounts.The Rock base specific to this IBEX is NW43 Note: Form will be cut for shipping unless you specify otherwise. View: How To Measure For Life-Size Forms.