lasting up to 40X longer than standard carbide metal cutting saw blades
Hex key adjusting screw tightens to adjust pressure and draw materials together and provides a controlled release
Black oxide finish
Single concave flute design creates perfectly round holes in thin materials including steel
Cast-metal case is durable and suitable for heavy-duty use
13-Piece Ball Hex Key Set Brushes lasting up to 40X longerIncludes: . 050", 1 16", 5 64", 3 32", 7 64", 1 8", 9 64", 5 32", 3 16", 7 32", 1 4", 5 16" & 3 8". Turns 360 degrees at up to 25 degree angle. Extra torque 8650 chrome nickel alloy, heat treated for maximum strength. Black oxide finish to resist rust. Made in USA.