The Alligator Couplers are used for splicing any grade or profile of reinforcing bar. These couplers are made for reinforcement steel with diameters in the range of 10mm to 40mm. Connection is made by inserting bars into both ends of the coupler. The breaking bolts are then screwed by hand and tightened by ratchet wrench until bolts shear off. These couplers can be used in particular cases to replace the damaged reinforcements with new ones and to connect to the old structure.