IMPORTANT : ---> the "ECU" model is available in 2 diameters, 16 or 20 mm. ---> 4 versions are available: A, B, C or D
Please select the desired model and version, otherwise you will receive version A in 16 mm diameter. Version A - 2 BO supports "Ecu 16 or 20" :
- 2 "Ecu 16 or 20" BO supports for 15 or 19 mm covered butt...