Each of these 6 bins are of consistent superb quality. All have smooth edges. Whole set is sturdy and space saving. A perfect purchase! The 10" fit our kitchen cupboard depth just right and the 4" width holds most of my jars (of baking ingredients) for easy pull-out reach.In comparison, we have purchased different sized bins for fridge from certain other brands that seem to appear frequently in the top search results and are costly. I'm not saying all are bad, but the quality of those others we have tried, have been a hit & miss experience within the same order of 2 or more sets. Although they are all made of same sturdy material, some arrived scratched up, others 'unfinished' with rough, sharp edges that scratched me deep enough to sting... I didn't want to risk them scratching up our new fridge shelves. For their prices I expected quality products. So we returned some for replacement others for a refund when we gave up. Very grateful for Amazon's return/replacement/refund policies!!Back to this product set of 6 bins that we received:every single bin IS of perfect consistent qualityfor an enjoyable lower priceI'm so glad I chose to try this brand/company. I highly recommend them!The organizer bins are perfect for organizing my fridge. The containers are sturdy and easy to clean. I will definitely order more.Sturdy and decent containers that stack well. They are a little small but available in other sizes.Effective at holding tool steel. We are using them in a tool bench to hold tool steel after it’s cut, while it’s waiting for the next process. It’s a great way to organize the sizes. These are holding up quite well.I love these containers for my fridge for holding eggs, holding string cheese and other foods. They are super easy to clean and look sleek in the fridge.These are awesome. You won't regret the purchase especially for this price.I would like to have found a larger size.I’m using these in my classroom for diapers, perfect size for the shelves and lets me see the contents.