Just use these tools just like a cookie cutter. Use the spring-loaded plunger to push out the cut shape from the brass tube.
The oval sizes are 11x7mm, 11.6x9.5mm, 14.1x10mm, 17x13.6mm, 22x14.8mm (If not handled properly, these cutters can bend so the measurements are approximate).
Just use these tools just like a cookie cutter. Use the spring-loaded plunger to push out the cut shape from the brass tube.
The oval sizes are 11x7mm, 11.6x9.5mm, 14.1x10mm, 17x13.6mm, 22x14.8mm (If not handled properly, these cutters can bend so the measurements are approximate).