Posca Zirconia Blaster Single Pen and Double PenPLEASE ALLOW APPROXIMATELY 8 TO 12 WEEEKS FOR ORDER PROCESSING AND FULFILLMENT Available in 2 models Single Pen and Double Pen Negative pressure sand cylinder for safety; no pressure inside eliminates cylinder explosion risk. Uniform sand production with good gas sand mixing. Adjustable operational pressure from 0. 1 MPa to 0. 8 MPa. Optimal 45 degree sand production angle. Addresses uneven performance, size fluctuations, sand blocking, and blasting