10pcs Weller ET Replacement Soldering Tips for WE1010 WES51/50, WESD51, PES51/50, LR21 Soldering Iron Tip, ETS/L/KN/T/U/R/A/B/C/D (China Made Brand "ACE", Not Weller Brand but very high quality), Regeneration temperature very fast and keeps temperature stable. There are different shapes (including 4 pieces screwdriver tips, 1 piece long screwdriver tip, 1 piece narrow screwdriver tip, 1 piece tapered tip, 1 piece long tapered tip, 1 piece single flat tip and 1 piece knife tip, total 10 pieces in one bag). This kit helps with soldering on various projects. We will agree to receive return and full payment refund if you are not satisfied with the tips. We will try our best to solve all your questions.