Fangrui Product Details 1.reliable And : Made Of Safety Material, This Seam Diagonal Seam Tape Is Environmental Friendly And Can Withstand Repeated Washing And Ironing. It Is A Paper Tape That Does Not Leave Any Stain On Your Fabric. 2.convenient And Practical: This Seam Diagonal Seam Tape Is Easy To Use And Saves You Time And Effort. You Can Simply On The Fabric And Sew Along The Red, Black Or Blue Wires That Act As A Guide In Front Of The Sewing Machine. 3.no Trace: This Seam Diagonal Seam Tape Is Easy To Remove And , Leaving No Residual Stains Or Traces On Your Fabric. Tape Removed Clean And Smooth, Making Your Sewing Work More Convenient And Neat. 4.sew Straight Diagonal Seams: With This Wonderful Design, You Can Easily Sew Diagonal Seams Without Marking Them. It Helps You Achieve Quarter-inch Seams And Save Time And Fabric. 5.no Need To Mark : With Seam Allowances On Both Sides, This Seam Diagonal Seam Tape Helps You Sew Straight Diagonal Seams Without The Need To Mark Any Lines. Just Align The Fabric Edges