Two (2) Receiver/Hitch Locks Keyed Alike. Same Key Opens Both. 4 Keys Included. If you order two 2-packs or any multiple of this lock we will automatically key them all the same. 5/8" (16mm) Diameter Receiver/Hitch Locking Pin w/ a 3-1/8" Long Shaft Featuring the "Push to Lock Security". Stainless Steel Construction Resists Corrosion w/ Swivel Head Design That Allows For Easy Access. Extended Length Fits 2 in. and 2-1/2 in. Hitches. Class III & IV and 10,000 lb Load Ratings Two (2) Receiver Hitch Locks Keyed Alike by Master Lock - Model # 1469KA-2 w/ a Lifetime Guarantee! Push to Lock technology - simply push lock body onto pin firmly and remove key. The shaft's length is exactly 3-1/8" long. The locks come with four (4) keys. Protects from theft when securing the ball mount to the receiver. Fits 5/8" diameter receiver holes found with class III & IV hitches.