12 point "Bi-hex" wrenches for service on: Common Rail Injection, Power steering lines, Expansion valves, A/C lines, Hydraulic lines, Industrial equipment, Fuel filter lines, Mercedes Sprinter Diesel Common Rail Injection Systems & newest ISX Cummins engine 
Includes the following sizes: 2220X14 – 14mm, 2220X17 – 17mm, 2220X19 – 19mm & 5069 – 22mm. 
1/2" Square Drive 
Chrome vanadium steel 
Packaged in blow mold case.