The extension wand and colorful nozzles need to be purchased separately. We only use Brass and stainless steel for those wand lance, that makes the products to be more durable. This is conversion extension wand lance for installing on pressurewasher gun of famous brands such as Karcher, Lavor, Kranzle, Nilfisk ,Bosch and so on. The 5 pcs 1/4 spray nozzle makes you to clean your car more easy because of different water spray angle. Extension Wand Model A10: For Karcher K2 K3 K4 K5 K6 K7 K Series Pressure Washer gun k1, k1 battery k2 follow me,? k2 basic,? k2 compact , k2.050 K3 , K3.200 , k3 full control k4 premium K5 premium, k5 full control , k5