18 pieces ACE ET replacement soldering tips ETS / L / KN / T / U / R / A / B / C / D / AA / BB / CC / DD / O / K / M / H for Weller WES51 / 50, WESD51, PES51 / 50, LR21. Fast heat recovery and stable temperature. The different shapes (5 x screwdriver tips, 3 x long screwdriver tip, 1 x narrow screwdriver tip, 1 x tapered tip, 2 x long tapered tip, 5 x flat tip and 1 x knife tip, total 18 pieces) are useful for soldering various projects.