29 Jul 245 Pcs 19 Sizes Set Screw Assortment Kit SAE Allen Head Grub Screws for Bathro
1 - Standard size (Tolerance:±0.005mm): Uniform force, located in the center of the head with no offset, not easy to slip; Uniform pitch, obvious screw thread, no residual burrs, the set screw threads will be able to get a good grip....