WAX FREE V-NAIL CARTRIDGES FOR CASSESE UNDERPINERS. 

This v-nail cartridges  will work with your cassese underpiner just like the genuine cassese cartridges, the box includes five cartridges only as oppose to the cassese brand that includes six, v-nail are wax free so the wedge hammer can easily push them up without jamming your block.

280 V-Nails Per Cartridge.

1400 V-Nails Per Box.