Compare Quick view G G Industries G G Industries | VENTURI AIR CONTROL: 1/2" SLIP, POLISHED BRASS | 13682 MSRP: Was: Now: $20.19 G G Industries | VENTURI AIR CONTROL: 1/2" SLIP, POLISHED BRASS | 13682 Specifications: Hole Size:Socket Size: 1/2" Brand name : G G Industries by Balboa Water Group