Kit Contains: 13N10 Ceramic Cup (10mm) | 13N12 Ceramic Cup (13mm) | 13N22 Standard Collet (1.6mm) | 13N23 Standard Collet (2.4mm) | 13N24 Standard Collet (3.2mm) | 13N27 Collet Body (1.6mm) | 13N28 Collet Body (2.4mm) | 13N29 Collet Body (3.2mm) | 41V35 Medium Back Cap | 41V24 Long Back Cap | 1.6mm 2% Thoriated Tungsten Electrodes (150mm Length) | 2.4mm 2% Thoriated Tungsten Electrodes (150mm Length) | 3.2mm 2% Thoriated Tungsten Electrodes (150mm Length) | Plastic Container Box