Contents: Large Cap (1) Disposable Sponge Disks (2 pk. 100) Medium Cap (1) Needle/Syringe Kits (4) Small Cap (1) Electro-Gel (3-16 oz.) Extra Small Cap (1) Special Head Measuring Tape (1) Electrode Board Adapter (1) Ivory® Liquid (1-14 oz.) Body Harness (1 Medium ; 1 Small) Instruction Manual (1) Quick Insert Electrode (4) Instruction Video (1) Ear Electrodes (2 pr.)