These warming blocks are for small and larger test tubes: 14/17 cc or 6 cc. And syringe 10cc and 20cc while used at the temperated tabletop.
31202000 Warming block Tube 14/17 cc tilt
31201417 Warming block tube 14/17 cc
31206000 Warming block tube 6 cc
31200010 Warming block for 10cc syringe
31200020 Warming block for 20cc syringe