Product Description: MBT couplers do not require bar end preparation to form threads, nor is bar rotation required to complete installation. The bars are supported within the coupler by two serrated saddles. As a series of lockshear bolts are tightened to a predetermined torque, they are embedded into the bar. Whilst this is in occurrence, the saddles of the coupler bite into both the bar and the shell of the coupler. Installation is complete when the heads of all bolts are sheared off. MBT couplers can be used to join imperial, plain round or deformed reinforcing bars.