Features:1.Features: Spring-loaded detent balls securely latch and notches in drive ends lock onto ratchets and extensions.2.Function: Universal joint socket adapters are applied to repair, car modification, wrench socket transformation.It is widely applied to the vehicle transmission.3.Size: Universal joint socket adapters can match with socket adapters converter 1/4 Inch, 3/8 Inch, 1/2 Inch and drive socket extension set - includes 1 3/4-Inch, 3-Inch, 6-Inch and 8-Inch extensions.4.Package includes: Package includes 1 pc 1/2 Inch, 1 pc 3/8 Inch, 1 pc 1/4 Inch Universal Joint Socket Sets.5.Material: Made from 35K+50BV30. Durable for use.Specifications:Material: 35K+50BV30Color: silverSize: (Approx) top x bottom x H1/4inch 6.3x14.5x44mm/0.24x0.57x1.73inch3/8inch 9.5x19x54mm/0.37x0.74x2.12inch1/2inch 12.5x24x66mm/0.49x0.94x2.6inchPackage Included:3 Pcs/set x Impact Universal Joint Socket