FINE TWIN PACK - (Contains - 1 x Straight & 1 x Diagonal A4 FlexiDuo Grid. (Stainless Steel)) Also includes FREE A4 PCA Grid Mat (M4014B) (May be used for embossing or perforating). When perforating use A4 grid mat. When Embossing, do not use any mat. Place directly on top of a firm or hard surface.