Gaahleri Ace Series GHAC-Swallowtail SD Side-Feed Airbrush | Hobby Heaven Hobby Heaven · By Hobbyists, For Hobbyists ???? Gaahleri Ace Series · Swallowtail SD Side‑Feed Trigger Airbrush · Dual Feed (Gravity + Siphon) · 0.28 + 0.5 mm · Fan Cap ⚙️ 0.28 + 0.5 mm ???? Trigger‑Style ↔️ Side‑Feed Dual ???? Fan Cap ???? 8‑MAC Nozzle ???? What Is This? A side‑feed trigger‑style airbrush with a dual feed system — small gravity side‑cup for detail work and larger siphon bottle for coverage. Ships with two nozzle/needle sets (0.28 mm + 0.5 mm) and a fan cap. The "SD" stands for the side‑feed dual design — the cup mounts to the side instead of on top, giving you unobstructed line of sight to the nozzle and work surface. ↔️ Why Side‑Feed? What's the Dual Feed System? This is the key difference between the SD and every other Gaahleri airbrush.