Features and Benefits: Unique dual position drive extensions provide the ability to use as either a standard extension when fully inserted into the socket or as a wobble extension when partially inserted; Includes 5", 10" and 15" Wobble Extensions; Packaged in a tray; For 1/2" drive tools; For increased reach and access; 3-Piece 1/2 in. Wobble Extension Set includes 5 in., 10 in., & 15 in. Wobble Extensions packaged in a tray..