3 pieces Matrix Tofflemire Retainer Universal Bands Dental Instruments

When tightening and loosening, it sticks and can be very difficult to turn which is annoying when placing a restoration. You're not sure if it's tight because the matrix is tight or if it's stuck. Knurling is also a little aggressive for me, but that's just a personal preference.

Parecen usados, están como oxidados

2 of the 3 do not work, and 1 arrived broken. Very poor quality.

Don't bother buying it. Just does not work. Poor quality

The outer knob very tight and doesn’t engage in the matrix band

Thing broke during the first use! Not worth the money