Check the listing for details. Pro Line Spyder Java Compact Paintball Gun Replacement 7-hole Venturi Bolt + Pin. Condition: New. Listed at 8.95 USD. Pro Line Spyder Java Compact Paintball Gun Replacement 7-hole Venturi Bolt + Pin FREE SHIPPING! in USA only. Auction is for a brand new Spyder Venturi bolt. MSRP: $24.95! Unique one-piece lightweight design features an integrated concave 7-hole Venturi face with integrated connecting pin. Fits all mechanical Spyders (and some compatibles) except rear cocking models, top cocking models, electronic models and VS models. Anodized aluminum. Engineered for maximum efficiency, long range accuracy and reduced ball breakage. The improved performance is the result of the air being reconfigured to strike a larger surface area of the ball minimizing the hard air blast impact that you get from the stock bolt. This is a drop-in accessory, and takes only a few minutes to install. Powered by SixBit's eCommerce Solution