The product received does not match what was declared. The springs are actually 8mm x 25mm long, not the advertised 20mm length. The correct springs needed for Ender 3 printers (or clones like the Voxelab Aquila) require a shorter 20mm length to fit properly. 25mm is too long and almost or fully compresses the springs. The seller has solved the problem, but please correct the description of the offer.