The New V-Factor Soft Tip Set are uniquely built for high performance. The shafts are a short super strong polycarbonate opal. The barrels are 90% tungsten with deep grooves for a sure grip and the weight you want in a slim profile. The Viper flights are a full 150 microns thick for long life. These sets come in 5 barrel types and include the V-Factor box and case. Available in 16 or 18 gram weights.