Trimax TM32 (T3) 5/8" Receiver Lock & (TC2) 2.5" Span Coupler Lock Keyed alike set includes one T3 5/8" Receiver Lock and one TC2 2.5" Coupler Type A key which is a spring loaded, 7 pin, high security key. Resists attempted drill outs. Rugged and durable, the key will not bend or break. Lifetime Warranty Chrome finish Fits class III and IV receiver hitches