Size: Diameter: 6mm/ 0.24" and Tolerance:+0"/-0.0008";Height: 25mm/ 0.98" and Tolerance:+0.02"/-0.02";Finish Type:Centerless grinding. Material: These Dowel Pin Steel are made of 304 stainless steel. Its surface is very smooth. They are rust-resistant, corrosion-resistant, strong and durable for long using life. Easy to install: This cylindrical locating pin has special on the two ends of the pin, so that the pin can be easily inserted into the mounting hole. Please confirm the size of the locating pin you need before purchase. Application: Mainly used for metal devices, such as punching punch, industrial , fixture, pin gauge, hinge or shaft fixed application 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 6 mm)