B.W.P TIG Torch Part Accessory Long Medium Short Back Cap Kit 57Y02 57Y03 57Y04 For 17/18/26 Series Welding Torch Fit for SR DB WP 17 & 26 series air cooled torches and 18 series water cooled torc 57Y02: Long Back Cap 1PC 57Y03: Medium Back Cap 1PC 57Y04: Short Back Cap 1PC