Extension Ø4, Inox, M3 (touch-trigger)

Standard M3 extensions have a smaller outer diameter of 4 mm compared to the 5 mm diameter used with the ZEISS M3 XXT system. The resulting loss of rigidity is compensated for by the use of a stable stainless steel rod. However the weight of the extensions is significantly higher compared to the carbon fiber used in the ZEISS M3 XXT system