Home / Sievert & Bullfinch Equipment / Neck Tubes Product Description All Sievert Pro burners, except the soft flame burners, 2960 need a necktube to connect the burner to the handle. The Sievert 3501 Lightline neck tube is only suitable for use with burners 8842, 8719, 8720, 8723 and 8725 Delivery & Returns Sievert 350101 Gas blow torch neck tube 78mm £25.99 £21.66 (ex. VAT)