Zero Surface Prep. 4x Tougher than Typical Epoxy*. Cures in as fast as 30 minutes. Strong, Flexible bond. High Impact Resistance. Ideal for Metal Bonding & Automotive Repairs. No Degreasing or Roughening Required. 2:1 Mix Ratio. Cures Dark Grey. Bonds Metal, Plastic, Tile, Ceramic, Glass, Stone, and Wood. Size .9 fl. ozs.