Advantage 7 x 7/8 Zirconia Flap Wheels 40 Grit 10 Pack Miller style Mig Parts They have a fiberglass reinforced

They have a fiberglass reinforced center with a metal reinforced arbor hole

Harris style 7490 BTU cutting tips work with an old style of Harris torches that takes threaded cutting tips

Acetylene or Mapp gas Setup Options include the Harris 23A90 welding elbow tips (0-10) and heats with the J-63-1 and 2

Arbor size is 5/8"

Advantage 7 x 7/8 Zirconia Flap Wheels 40 Grit 10 Pack Miller style Mig Parts They have a fiberglass reinforcedAdvantage 7 x 7 8" Zirconia Flap Discs that are 40 grit. Maximum RPM is 8500. They have a fiberglass reinforced center with a metal reinforced arbor hole. These usually sell in stores for $10+ each.