Cervical Traction System 'To Door'. It consists of: Nickel-plated aluminium traction mechanism with plastic pulleys (Code: 3024).Common size fabric sub-case (Code: 3021).34 cm metal arch made of nickel-plated aluminium, rope and plastic hook (Code: 3034).Nylon water pouch up to 9 l. (Code: 3021). S..