Dia-Strip and Dia-Sheet lapping and polishing film incorporates pure virgin diamond powders in their highest concentrated forms. This slows for maximum material strength, durability, and performance. The powders are first expertly graded for uniformity, and then held into place by a thin nickel. With this approach, 90% of the grains are left exposed for cutting, yet are unable to escape the film due to the strength of the bonding agent. This unique construction makes Dia-Sheets and Dia-Strips highly durable, yet also flexible, bendable, and formable.