Description:1. These cylindrical pins are made of SUJ2-bearing steel, very smooth surface, anti-rust, anti-corrosion, solid and durable for extended use.2. Pins are internal threaded cylindrical fasteners, that fix a component's position, join components, or maintain alignment between them, used for positioning and connecting two parts, to make your equipment more stable.3. Chamfered ends add a hint of detail, and allow for easy insertion of dowel pins into any hole, while also can make installation easier.Notice: In order to make dowel pins a tight fit, your hole should be equal to or slightly smaller than the diameter shown (less than or equal to 10 mm)Specifications:Dowel Pin Size: 16x100mm/0.63"x3.94"(D*H)Thread Dowel: M8*1.25Internal Thread Depth: 15mm/0.