Kellermann, bolt stop for chain tool

Compatible with Kellermann chain tool kit KTW 2.0 (not available through MCS) and KTW 2.5 (MCS 934849). Used to ensure that the riveting pin stays perfectly centered in the hollow tip of the master link bolt. With the tool stabilized by the stop, you can safely turn the main pressure screw to perfectly flare the rivet without the tool slipping or bending the mandrel.