Brake Pipe Wrench with Ratcheting Function, 10×11 mm

– ring ends with ratcheting function
– both sides have a flexible ring end
– rings can be opened to fit around a pipe
– an internal spring ensures the ring closes securely
  around the nut
– the more pressure you put on the tools in driving
  direction, the tighter the head closes around the nut;
  this prevents slipping over the nut
– wrench holds the long sides of the nut and
  not its corners, therefore it works also on nuts
  with damaged corners