This scene was built in Maya 2016 and rendered using Mental Ray Final Gather.
The curling bar and its weights are parented to a control curve to facilitate organization and animation. This control curve also has a custom attribute for Smooth. You can change this attribute for more subdivisions on all smoothed geometry.
The weight tree also has a parent control curve but all smooth control is done on the curling bar ctrl.
Poly and Vert counts are totals for all geometry in the scene with smooth set to 0. The model was rendered at a setting of 2.
There are bump maps for the weight plates and for the curling bar. Bump maps and psd are included.