LIGHTNING BOWSTRINGS: The home of archery’s original “real time” torque indicator Square Up. The Square-Up provides the shooter a real time reference in his sight picture to recognize and correct riser torque before the shot. Bow riser torque is the most common shooting error and until you have the ability to see it and correct it. Order your Square-Up today. Use product code TT4200 for a 15% discount on website purchases. Visit our website at www.lightningbowstrings.com.