This steel wave form helix spring measures 20mm in diameter with a 3m closed length that extends up to 9m for wave motion demonstrations. The spring produces visible mechanical waves including longitudinal, transverse, and standing wave patterns. The apparatus helps demonstrate energy transfer, amplitude, wavelength, frequency, wave speed, and the difference between S-waves and P-waves. It is suitable for exploring reflection, refraction, transmission, and wave speed through varying tension. An experiment guide with setup instructions, procedures, safety guidelines, and core scientific concepts is included. For learners 15 years and older.