Bolt coupler is very easy connection, The mainly size is 16-20-25-32-40mm,
18-22-28-36-38mm is not normal. This type rebar connection is a special connection , the principal is bolts top tight rebar to complete the connection , applied in special connection such as narrow gap between two rebars , no thread on the rebar , neither of the rebars can be rotated.
This type coupler needs special wrench to lock the bolts . It is a mature product and has been applied in many special design of the projects , and supply locking wrench to clients. It is convenient for customers to apply after purchasing.