The M-SP-1-LC Precision Ground, Stainless Steel Optical Mounting Post is 12.7 mm diameter with a length of 25.4 mm. It has an M4 tapped hole in one end and an M6 tapped hole in the other end.

M-SP-1-LC精密研磨,不锈钢光学安装柱直径12.7 mm,长度25.4 mm。一端有M4攻丝孔,另一端有M6攻丝孔。