The 41-5-12-EN-LF from Calmark Birtcher is Wedge-Lok with 5 segment, non-shafted design, lock & flat washer and 2-56 tapped hole. This Wedge-Lok has 6.10 mm (0.240") x 4.57 mm (0.180") profile dimensions and 152.40mm (6.0") length. The 41-5-12-EN-LF has electroless nickel finish. For cold wall applications.