TSS Jelly Head Features Primos TSS Jelly Head Choke Tubes are specifically designed for the all new TSS load that is taking over the turkey hunting industry. The TSS Jelly Head allows hunters to have a super-tight evenly spread pattern allowing them the accuracy to kill even the toughest of gobblers. TSS Jelly Head Specifications Brand: Primos Model: TSS Series: Jelly Head Gauge: 12 Gauge Color: Black Material: Steel Constriction Type: Turkey Style: Extended Constriction Diameter: .650 Chokes Included: 1 Configuration: Invector-Plus