SPECIFICATIONS: 0.012” strengthen carbon steel wires, Max speed 4500 RPM, 1/4” Hex shank. Hand Orientation Both Hands. PERFECT FOR DRILL: The 1/4” Hex Shank is perfect for all kinds of drills. STABILITY AND DURABILITY: All types of brushes in this set are coated with harden steel plates to hold the bristles better.

The M4 red dot screws kit contains 3 sizes with a total of 9 screws. Red dot screws are made of high quality 304 stainless steel for excellent oxidation and corrosion resistance. Pre-applied blue thread locker of red dot screws seals prevent leakage, increase corrosion resistance and prevent screws from loosening, making optics more secure.