Complete Waxoyl Professional application kit includes everything you need to do the job. Comes with the HRS gun with both K-3 and K-4 wands necessary for applying Waxoyl 120-4 to cavities. Includes the HW-98 gun for applying Hardwax to the underbody, which is a high-flow gun ideal for large vehicles. The K2 wand is also included for applying Hardwax with the HRS gun, which is ideal for detail work. Note: As this kit only includes 1 HRS gun, the product must be emptied when switching from applying Waxoyl 120-4 and Hardwax.