This adapter with ball retainer provides a secure and reliable connection for socket spanners, featuring a 1/2 inch (12.7 mm) square male tool side and a 3/4 inch (19.05 mm) square female socket side. Its 48 mm length ensures optimal reach and smooth operation in mechanical and industrial settings. Key features: - Tool side connection: 12.7 mm (1/2 inch) square male - Socket side connection: 19.05 mm (3/4 inch) square female - Length: 48 mm for effective accessibility - Ball retainer mechanism for secure socket retention - Robust construction suitable for professional use