The Airfly Crab Trap, 5oz is an excellent tool for catching Dungeness, Blue Crab, Rock & Red Crabs. It can be used with a fishing rod, and its self-opening loops shoot straight into the air, even while under water. The trap is perfect for beach, pier, or dock use and is ready to use right out of the package. The bait cage measures 4”x2”x1" and features a 6*14 in blue 6-Loop, 0.065 in diameter. Here are the steps to use the Airfly Crab Trap: Tie the crab trap to a fishing rod or a sturdy line. Insert bait into the bait cage. Wait for a crab to take the bait. Once a crab takes the bait, gently pull the line to set the trap. The loops of the trap will automatically tighten around the crab, trapping it. Slowly reel in the line to retrieve the crab. Remove the crab from the trap and reset it with fresh bait to catch more crabs. Note: Always check your local fishing regulations to ensure that the use of crab traps is permitted in your area.