SL-1 Trailer Security Lock for 2" Couplers Perfect fit for Bulldog 2" Couplers "Keep Your Trailer Where You Leave IT!!! Made in the USA all steel fabrication requires no Modifications to Trailer Connector Stainless steel shackle lock included for Maximum Security (cutproof and freon resistant) Coupler Pictures Represent Sizes this Product fits 2" Desiged For 2" Bulldog Couplers Shackle Lock Hasp (Close Tollerences) Preventing Bolt Cuttler Peace Of Mind when storing your Trailer Keep your Trailer where it belongs (where you left it)