BAR REDUCER COUPLERS are also known as Transition Couplers. These are taper treaded TYPE 2 couplers. Designed with internally threaded sleeves with two right hand threads both of which are tapered towards the middle of the coupler; These couplers are available in different sizes from 12mm to 40mm. These types of couplers are primarily used to join reinforcing bars of different diameters given that one coupler can be rotated. This enhances their ability to achieve failure loads upto 115% of the characteristic strength of the smaller diameter grade 500 reinforcing bar.