【Specification】6pcs,Diameter:4-1/2 inch(115mm),with 3/8"(9.5mm)arbor.Please see pictures for more details. 【Application】60T HSS:copper，aluminum,other non-ferrous thin sheet，wood,plastic,glass fiber,dry wall,etc.24T TCT:Wood,Plastic,plywoods,chipboards,multilayers,panels,etc.9T blade:Concrete,Paving materials,Masonry,Terrazzo,Stone,etc.Dry or wet used. 【Why choose us】Saving you money,this kit is very economical.Multifunctional,very suitable for DIY projects, home maintenance and home use.Effective: Sharp saw blade cutters with thin kerf ensure smooth, fast and accurate cutting with impressive results. 【Feature】24 Carbide-tipped teeth for TCT blades help smoothly cutting.Made of durable, high quality alloy steel material with sharper structural grade tungsten carbide teeth;60T HSS blade:ideal for soft metal.High-speed steel forging,high hardness and wear resistance;9T blade:High quality diamond blade can ensure cutting efficiency.High quality diamond, with scientific formula, ensures that its cutting efficiency and service life are greatly improved. 【Machine】Compatible for most 4-1/2 inch mini circular saw,etc.Easy to operate.If you have any problem when you use the product, please feel free to contact us for satisfactory customer service.