LB’s Whip 5 Pieces Replacement Whip Cracker Whip Popper Made of Kevlar Thread The strongest and professional Cracker or Popper with Kevlar Thread. Kevlar thread is stronger, more heat resistant, less stretchy, and durable than most other threads. It is extremely strong and lightweight, with resistance toward heat. It is used in vast applications such as aerospace engineering (such as the body of the aircraft), body armor, bulletproof vests, car brakes, and boats. 5 pieces of black whip crackers, available in black color, suitable for different stock whips, Bullwhips and snake whips. Total Length is 25 cm. Quality Popper Cracker