Water cooled beam tube length 17 mm
https://indus.ms-engi.com/shop/p-10033-water-cooled-beam-tube-length-17-mm-113
https://indus.ms-engi.com/web/image/product.template/113/image_1920?unique=ae52fcb
Water cooled beam tube with below - diam.: 50 mm - length: 17 mm
