A 24-piece hollow die set for Scott Creek 4″ wall mount extruders. The set includes 13 outer shapes, 10 inner shapes, and a cast aluminum inner die holder. The round, square, and triangle hollow die shapes come in 4 sizes: 1″, 1 1/2″, 2″ & 2 1/2″. Also included is a 3" round hollow die. Wall thickness are adjustable by changing the inner die size.