Replacement blade for clover rotary cutter with 5 blades in a pack. Replace a blunt cutter blade for a new one. It's also possible to sharpen dull blades with the Sharpener for rotary cutting blades
Cut fabric iwith a rotary cutter instead of scissors!
Easy to cut around the pattern using the cutter and a ruler. Or make strips of fabric cut of the bias for making bias binding.
After use, slide the cover back on and store safely

Lefthanded? See how to convert the cutter from right of lefthanded setup here: video converting rotary cutter from right to lefthanded