The 2178301-1 from TE Connectivity AMP Connectors is a non-insulated 0.250" (6.35 mm) quick-connect female receptacle for 10-12 AWG crimp wire, with F-spring (6.3 SRS, LIF) design.
The 2178300-1 from TE Connectivity AMP Connectors is a 0.250" (6.35 mm) non-insulated female quick-connect receptacle (SRS, LIF) with F-spring design for 14-18 AWG crimp use.