The 40-4-LF-LN-M2-L from Calmark Birtcher is Wedge-Lok with 3 segment, non-shafted design, lock & flat washer, lock nut and M2 x 0.40 tapped hole. This Wedge-Lok has 5.72 mm (0.225 in) x 6.60 mm (0.260") profile dimensions and 50.80mm (2.0") length. For cold wall applications.