You need to find out rather or perhaps not the vendor has photos available of the product they are selling. When you're shopping in person, you have the option to look at products close up, hold them in your hand, and study their texture. When you are shopping 10pcs IRFR120N FR120N TO-252 online, pics are the closest thing to that there is. I would not advise buying from any on-line goods shop that doesn't exhibit pictures of the product. It is advisable to research the online goods shop's shipping policy. How much should shipping be? Is it free of charge? If it's free, will it have an eternity to arrive? If I must pay for it, when can I anticipate my purchase to arrive? These are all things you as a consumer ought to know, and you can usually easily find the answers to these questions simply by find a "Shipping Policy" or "FAQ" page on the site. Last, but certainly not least, you need to find out what forms of payment the website accepts. This seems like it could be obvious, but I won't even count the times that I've found a wonderful quality product on a site, only to find away that they don't accept some forms of payment I have offered.