FEATURES - Features a tilting angle adjustment as well as a 30°swivel hinge - Standard 1 3/8” insert fits most speaker cabinets - Ergonomic 2” knob adjusts tilt angle from 90°to 30° - 90 Interlocking teeth mesh together to form a solid adjustable pivot point for tilting your speakers - Added solid-steel pin serves as a safety-stop - 9mm Steel bolt and nut