GearWrench Professional 12 Piece Limited Edition Black Ratcheting Wrench Set 8 – 19mm. 72 teeth ratcheting box end needs as little as 5° to move fasteners versus 30° for standard box end wrenches. Surface drive® on box end provides off-corner loading for better grip and reduced fastener rounding. 15° offset offers increased clearance. The original patented ratcheting wrench. Supplied in a useful spanner rack. Sizes: 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm.