The Bigood BLPT heavy duty anchor in the range of M6, M8, M10, M12, M16 and M20 is an anchor made of galvanised steel. BLPT anchor has a hexagonal head, BLPC anchor has a countersunk head and the BLPE is the projecting bolt version. The anchor is installed into a predrilled cylindrical hole and anchored by torque-controlled expansion. The anchorage is characterised by friction between the expansion tube and the concrete.