Takes a Parker refill. Bottom tip unscrews to access the refill (watch out for the spring on the end of the refill). Anvil, vertex, etc. are types of pen styles. Vertex has a hexagonal pattern on the grip and a silent click mechanism. Anvil, EDC and slim pro have an all-metal pen mechanism made by the Schmidt pen company.
Takes a Parker refill. Bottom tip unscrews to access the refill (watch out for the spring on the end of the refill). Anvil, vertex, etc. are types of pen styles. Vertex has a hexagonal pattern on the grip and a silent click mechanism. Anvil, EDC and slim pro have an all-metal pen mechanism made by the Schmidt pen company.
