Straight open ring wrench with ratchet, metric sizes • Open ring wrenches with ratchet: the wrench is opened to be placed around the pipe and closes on the nut for optimal grip. The special shape of the key allows a ratchet effect. • Quick tightening of pipes in passenger cars, trucks, public works, compressors, refrigeration installations, aviation, sanitary facilities, etc. • 6-sided head: 7 to 10 mm - 12-sided head: from 11 to 32 mm. • Hanging loop at the end of the stem: to place or hang the keys on a panel to prevent loss or falling. • Metric sizes: from 8 to 32 mm. • Version: chrome-plated, satin-finished handle / burnished head.