Gyros 2&rdquo; Cut-Off Wheels, Fiberglass Reinforced, High-Tensile Strength -12 Pack. Works with Dremel Tools For Materials Such As Steel And Bronze. (11-32208/12) Made in USA Gyros high-tensile strength cut off wheels are reinforced to resist breakage and for long term use. They are 2 in diameter and 1/32 thick, with a center hole of 1/8 Maximum Speed: 30,000 RPM High-Tensile Disc is specially manufactured and designed for swift cutting of steel, bronze and such materials Cutting Wheels Works with Dremel and similar Rotary Tools. Package Contains: 12 Cut-Off Wheels and 2 washers. Use with Mandrel No. 80-18100 Made in the USA