I've been sewing for over 50 years (garments, quilts, handbags, jeans) and straight pins today (regardless of the name brand) are just not made as strong as they used to be. I know this to be a fact because I still have a few straight pins that used to be my grandmother's. Whatever the metal composition is of these pins, it appears to be the standard for all straight pins on the market. I know because I bend pins all the time in my sewing and have tried many name brands trying to find the 'perfect' straight pin. It doesn't exist, folks!
Having said that, it's important for a newbie to sewing to understand the pros and cons of different kinds of straight pins on the market so you won't be disappointed. If you're sewing with a thin, sheer fabric, a 'shorter' pin like these (1.25") will be fine, but if you are sewing thicker fabrics or pinning multiple layers together as in quilt batting, you'll want to use a longer pin. Because I sew with a variety of fabrics, very sheer knits as well as suede and denims, I don't want to have to dig through my magnetic pin holder to find the size I need, I want to just grab a pin quickly and be done with it, so I personally just always buy longer pins than these, so my pins will always be long enough no matter what I'm sewing.
Then there is the issue of the head of the pin. Round heads on a pin (like these) are much easier to grab a hold of than flat pin heads and I find that flat or round acrylic heads of pins break easily and frequently, not to mention melt if you accidentally iron over them. The bottom line is that these pins are as good comparatively as any other on the market as far as quality. The metal used as well as the method of sharpening the points on these pins are pretty standard for all straight pins today. Glass head pins (like these)  are always better than acrylic head pins because they do not break as easily and will not melt. You're going to pay a bit more for glass head pins but you'll be replacing them less often, saving you money in the long run. My advice is to buy glass head pins, but buy them in the length you will need them for most often. I give these pins a 5 star rating because the quality of the metal is standard, the points of the pins are standard, but their best feature is that they have glass heads on them.
No matter what pins you buy, for safety reasons for YOU, AND your machine, please do NOT sew over them! Although sometimes, your machine will sew right over them fine, there is that one time when it may break your sewing machine needle and send it flying towards you (been there and done that) or bend your pin making it useless.
I've been sewing for over 50 years (garments, quilts, handbags, jeans) and straight pins today (regardless of the name brand) are just not made as strong as they used to be. I know this to be a fact because I still have a few straight pins that used to be my grandmother's. Whatever the metal composition is of these pins, it appears to be the standard for all straight pins on the market. I know because I bend pins all the time in my sewing and have tried many name brands trying to find the 'perfect' straight pin. It doesn't exist, folks! Having said that, it's important for a newbie to sewing to understand the pros and cons of different kinds of straight pins on the market so you won't be disappointed. If you're sewing with a thin, sheer fabric, a 'shorter' pin like these (1. 25") will be fine, but if you are sewing thicker fabrics or pinning multiple layers together as in quilt batting, you'll want to use a longer pin. Because I sew with a variety of fabrics, very sheer knits as well as suede and denims, I don't want to have to dig through my magnetic pin holder to find the size I need, I want to just grab a pin quickly and be done with it, so I personally just always buy longer pins than these, so my pins will always be long enough no matter what I'm sewing. Then there is the issue of the head of the pin. Round heads on a pin (like these) are much easier to grab a hold of than flat pin heads and I find that flat or round acrylic heads of pins break easily and frequently, not to mention melt if you accidentally iron over them. The bottom line is that these pins are as good comparatively as any other on the market as far as quality. The metal used as well as the method of sharpening the points on these pins are pretty standard for all straight pins today. Glass head pins (like these)  are always better than acrylic head pins because they do not break as easily and will not melt. You're going to pay a bit more for glass head pins but you'll be replacing them less often, saving you money in the long run. My advice is to buy glass head pins, but buy them in the length you will need them for most often. I give these pins a 5 star rating because the quality of the metal is standard, the points of the pins are standard, but their best feature is that they have glass heads on them. No matter what pins you buy, for safety reasons for YOU, AND your machine, please do NOT sew over them! Although sometimes, your machine will sew right over them fine, there is that one time when it may break your sewing machine needle and send it flying towards you (been there and done that) or bend your pin making it useless.