Xpress XP-40006 Ultra Fine Chassis Droop Gauge 4.0 - 6.6mm For 1-10 Touring Car $39.95 / Tax included. Default Title Default Title Add to Cart Your Email Send This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. 0.2mm Stepped Droop Measuring gauge for 1/10 touring cars for a ultra fine measurement for droop.