The Goblin® Grenade is engineered for optimum maneuverability and to prevent nozzles from getting stuck on off-sets. All sizes of Goblin® Grenade have replaceable jet orifices for easy adaptation to different pump capacities and feature one replaceable front jet which can be blocked if desired. Improved internal flow design, compared with conventional nozzles, the turbulent flows are reduced and a more efficient cleaning is obtained. The high weight can be advantageous since Goblin® Grenade normally stays more firmly to the bottom of the pipe. Available with stainless steel or ceramic jets.