CRS tubes (BTX),100ng, pk/10 Back Catalog number: C-BTX100-10 Manufacturer: MARKES INTERNATIONAL LIMITED Availability: 2 weeks Price on request - + Recommended SERAAA-5167 Split filter tube,glass,4 1/2 ",pack with charcoal Price on request C-T6GCF10 Long-term stor cap,brass,tag-ready,pk10 Price on request C-DF010E Diffusion caps,alum,etched with serial numb,pk10 Price on request