3M Design Line Knifeless Tape - 50m3M 3M Design Line Knifeless Tape Trim your wraps, create racing stripes and much more without a knife. Faster, easier and safer than trimming with a blade. Never risk cutting into a vehicle's paint again. 3. 5 mm (1 8 nominal) Width Allows stretching, follows contours and turns easily in any direction Excellent for creating designs & stripes with no extra steps required to achieve a perfect cut Translucent tape so you can see exactly where your line