Made of heat treated high carbon steel for strength and long service life. This tool uses high quality materials to provide safety, reliability, and durability in demanding work. Two reaming ranges available - 1/8" to 1/2" - approx. 7.5 degree - 5/32" to 5/8" - approx. 3.25 degree Heat treated for performance - Constructed from heat treated high carbon steel to withstand frequent use and maintain sharpness and accuracy. T-handle design and function - The T-Handle Reamer removes burrs from holes in steel, brass, aluminum, plastic, wood and wallboard. - The T-handle provides a comfortable grip and precise control for clean, consistent deburring and hole sizing. Typical applications and use scenarios - Deburring drilled holes in metal, plastic or wood to create smooth edges and prevent interference with fasteners or assemblies. - Finishing and enlarging holes to the precise diameter range for a proper fit of dowels, bushings or fasteners. - Smoothing edges after cutting drywall, wallboard, or plastic panels to improve finish and ease of handling.