- The 2W Crowding Tub Handling Assembly off ers livestock handlers a pressure-inducing assembly that funnels cattle into a connected alleyway or assembly. By capturing cattle into the crowding tub, a panel is pushed toward the rear of the cattle. This forces the cattle to follow their natural instinct and funnel to the nearest escape option - which is typically an alleyway leading to a loading chute or squeeze chute. This assemblies are built from 2W’s Heavy Duty “400, 500, 600” Series materials ensuring a long lasting assembly life and maximizing owner’s return on investment.