Orbit 1/2 in. x 3/4 in. MNPT Poly Adapter 37217 - The Home Depot
Raindrip 1/2 In. Female Pipe Thread x 1/4 In. Barb x 1/2 In. Male Pipe Thread Drip Line Tap-Off Sprinkler-To-Drip-Adapter - Town Hardware & General Store
1/2" Male Thread Two-way Nozzle Rocker 360° Rotation Sprinkler for Garden Lawn Watering Agricultural Irrigation System DN15 - AliExpress
Source sprinkler irrigation system 1/2" male low angle 5024SD sprinkler on m.alibaba.com