Primos Bottleneck Deer Grunt Call Soft flexible bottleneck design automatically creates back pressure that Speaks The Language®. The Bottleneck Deer Grunt is the perfect call for those that want to produce ideal mid-tone grunts and ROARs. The calls compact size and soft all rubber design make it easily accessible when calling in the big bucks. Features: Compact size Single reed deer grunt Mid-tone deep grunts and ROARs Soft all-rubber design Easily accessible in the field