Quail size mechanical launcher. The QL series will launch quail or barn pigeon-size game birds for both pointers and flushing dogs. AIRFLOW - Excellent air flow for scent distribution. ADJUSTABLE STRENGTH - Spring tension allows adjustment of throwing height. QL - 8.6" x 4.5" x 4.3" NOTE: This launcher is compatable with Tri-Tronics Pro Control. Suggested receiver mounting with velcro.