FPW1423-3145 Features: -Firepower Double Reinforced Cut-Off Wheels are designed for heavy duty cut-off jobs using circular saws, chop-saws and straight grinding machines.-They ensure optimum effectiveness for dry applications on a broad range of ferrous and non-ferrous metals, soft ceramics, masonry materials, reinforced plastic and fiberglass.-Most Firepower cut-off wheels are double reinforced with two layers of fiberglass..-4 x 1/16 x 3/8 Cut-Off Abrasive Wheels, Type 1 (For Metal). Warranty: -90 day warranty on material and workmanship.