The Renzetti 3" Stem Extensions are designed to extend the height of your Presentation 3000, Presentation 4000, or Master Series vise, providing greater clearance and flexibility for tying larger or more complex fly patterns. Constructed from high-quality, corrosion-resistant materials, these stem extensions maintain stability while enhancing your workspace. Easy to install and compatible with existing deluxe stem supports, they allow tiers to customize their setup for maximum comfort and precision. Perfect for both freshwater and saltwater fly tying, these extensions help create an ergonomic, professional-grade workstation.