BST Chaser machine is mainly used for rebar in construction projects, being essential equipment to thread and join the rebar to gain length of rebar.

One of the important spare parts in the BST Chaser Machine is the Control key which is used to adjust the chaser in the machine. There are four chasers present in the BST machine for threading on the rebar. This BST chaser control key made it easy to adjust the chaser for threading on any size of rebar. A pair of Allen key bolts adjust the chaser in the control key. It used 4 control keys on the BST chaser machine, for one control key is used for every single chaser.