Meridian Tactix 16-in-1 Rotary Wrench (900110QP) Dual SAE/Metric functions. Fits SAE Imperial sizes 5/16' - 3/4" Fits Metric 8MM - 18MM sizes 16-in-1 rotary wrench with ratcheting function. Wrench size rotates 14mm (9/16 in.), 16mm (5/8 in.),17mm (11/16 in.), 19mm (3/4 in.)8mm (5/16 in.), 10mm (3/8 in.)11mm 13mm (1/2 in.)