1/2 inch Zyklop socket - For Manual and power tool operations (non-impact) - Knurling at lower end to enable easy gripping when used in Manual applications... Wera Zyklop 8790 HMC 1/2" SocketHead size: 7/8" hexHead outer diameter: 30.5mmBase outer diameter: 26.0mmOverall length: 37.0mmFeatures ball intercept ring and for use with hex head fastenersBrushed chromium plated finishSockets feature rear end knurling for reliable manual precisionThe Zyklop sockets can be used for both manual and machine work. Wera Tools 05003618001 8790 HMC SW 3/8 SOCKET, 1/2 inch Zyklop socket Wera Zyklop Wera 05004018001 Zyklop 8100 SA8 Slim Ratchet & Socket Set 1/4" Metric 28 Piece Wera 3/8 Wera 8790 HMB Zyklop 3/8 nasadni ključ, 22 x 30 mm, 05003567001 Knurling at lower end to enable easy gripping when used in Manual applications Wera 004558 8790 HMC Zyklop 1/2u2033 Drive Deep Socket 18mm