This is a A-HL11 Hitch Pin, Handle Lock, 1/2" x 4 1/4" PN: HL11Main Description As Following : A-HL11 Hitch Pin, Handle Lock, 1/2" x 4 1/4" P.N: HL11 Diameter: .500"Useable Length: 4.250" Replaces: HL1 RESOURCE INTERNATIONAL , Crossed From: SP124 , , S071011SP , , 12SL , , 18SDH102 , , 25113 , , 710HP , , 75195 , , 873-12SL , Found in Section & Models : Hitch & Drawbar Parts > Hitch Pins/ Hair Pins/ Clevis & Pins, (Miscellaneous) (UNDEFINED): Hitch Pins, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : Diameter: .500" Useable Length: 4.250"