Parametric openGrid Hooks

Parametric hooks for the openGrid system.The default geometry works very well for hanging key rings, but the Fusion files are included to make customization possible. There are a number of width/hook combinations covering a range of spacing options:# Spaces# HooksCentre spacing (mm)Space between at default width (mm)1128.023.02156.051.02318.713.72414.09.03242.037.034<td style="padding: 2px 3px; text-align: right