Compact design allows greater access in small spaces 90 tooth design delivers 4? swing arc 180? Flex feature Durable switch button allows for quick-change ratcheting direction, and a convenient locking system keeps the flex feature in the desired position. Universal Spline Design! It?s like having 6 wrenches in 1! Lifetime warranty Sizes: 8mm x 10mm, 12mm x 14mm, 13mm x 15mm, 16mm x 18mm, 17mm x 19mm