About this item 【SPECIFICATION】The wire brushes are constructed of 0.02” knotted high carbon steel wires, 5/8-11 UNC standard threaded arbor, running speed is up to RPM 12,500. 【HEAVY DUTY WORK】The twisted knotted wire wheel is ideal for heavy duty work. It is easy to be used for metal surface peeling and grinding as well as the surface treatment before painting or electroplating. 【COMPATIBILITY】The wire brush is compatible with all 4-1/2” angle grinders with 5/8” arbor or 11 UNC standard thread. 【STABILITY AND DURABILITY】The wheel brush is made of strengthen steel and large hexagonal threaded arbor to prevent the wire breaking and falling during the process of the heavy work.The carbon steel wires will also secure a great durability. 【PACKAGE INCLUDED】2 Pack 4 Inch Knotted Wire Wheel. › See more product details