Certain medical applications require specific ground ends and tips to the coil or wire form requirements. This is an application where we combined a variable pitched coil with the distal tip ground to a sharp point. It specified a tight tolerance on a changing pitch that fit well into our capabilities. We then developed a customized grinding process to supply the pointed tip. This coil is made from 0.018" diameter 304V stainless steel wire and coiled to an OD of 0.080"