Machine Specific V-Nails
Machine Specific V-nails are different from and cannot be interchanged with universal v-nails. These v-nails are designed for the specific machine or brand of machines in which they are used. Brands that feature machine specific v-nails include:
AMP (Alpha Machine Products) Fletcher-AMP Style - The width or wing span of these v-nails is 11.02mm and are specific to the "C" v-nailing machines.
Pilm / Fletcher-Terry Style - The width or wing span of these v-nails is 10.2mm, but they are specific to the Pilm / Fletcher-Terry v-nailing machines.
Pistorius Style - The width, or wing span of these v-nails is 10.2mm, but they are specific to the Pistorius v-nailing machines.
To avoid damage to your drive head, please only use v-nails that are designed for use in your underpinner.