Hands-On Testing Sometimes, there is just no substitute for hands-on examination and testing of a product before the purchase is made. Pictures and dimension specifications can only go so far and do so much. The Hanger Bolt Fit Test Kit The Hanger Bolt Fit Test Kit provides the "Do-It-Yourselfer" the opportunity to test an actual 5/16", M8 metric hanger bolt, and M10 metric hanger bolt to determine which fits their furniture item. Thus, they can be assured they are ordering the correct size for their installation. What is Included One 5/16" hanger bolt, one M8 Metric hanger bolt, and one M10 Metric hanger bolt are included in a sealed plastic bag. Each hanger bolt is clearly color coded (explanatory legend is enclosed) so the purchaser will be able to easily determine which is which.