They are cheaper than SPAX but not inferior to their quality. The square head is flat and rounded on the bottom and my bits tend to slip out and I cut into material with my bit - maybe it's just my application error but I don't have that problem with any SPAX screw. However when the bit grabs it fits well but it was 50/50 and hurt my thumb when my bit slipped off while riding. One broke in a 2x4 Douglas fir, maybe it hit a branch, maybe I drove too hard. ; one was completely warped out of the box and many of them were uneven (not a big deal, but then again those screws feel "soft" on them). TL; DR: These are great cheap screws for decking etc if you need hundreds of screws in one place. I think I can continue to buy them for the price alone, but I don't think they match or surpass SPAX in quality or handling.
SZHKM 150PCS M6 Kit Crib Screws Hardware Replacement Kit Hex Socket Head Cap Screws Nuts Zinc Plated M6 Screws Barrel Screws Furniture Screws And Bolts Assortment Kit For Baby Bed With Free Tools
24 Review
Hankook Tire Ventus Prime3 K125 195/55 R15 89V summer
12 Review
Xiaomi MiJia Electric Screwdriver Gun Cordless Screwdriver Black
20 Review
๐ฉ Included Fastener for Drywall - TOGGLER SNAPTOGGLE
10 Review