Perfect, thanks! My front grille is held on by gravity and 1.5 of these retainer clips. The back bumper corner pieces need a few as well.I don't have dimensions but these ones worked great for me - not sure if you can get them from Amazon canada. They are one and done however - meaning I replace them whenever I pull the grill. Sometimes they can be used twice if your careful - but definately not as good as OEM: https://www.amazon.com/gp/product/B07GWLCR51/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
They say there for 8mm hole - if that helps at all?
Here's 30 for $2 and free shipping from china🤷♂️

3.69US $ 26% OFF|30x Fender Bumper Push-type Retainer Rivet Car Fastener For Nissan Infiniti 01553-09321 8mm Hole Plastic Retaining Clip - Auto Fastener & Clip - AliExpress
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