You are bidding on a Vintage Snap-On KRA380 4 Piece Full Caster Set 2 Swivel Locking & 2 Fixed Made In USA. Units Mounting plate measures 3-5/8'' x 2-1/2'' with 2 sets of bolt holes. Units measure 5'' High from mounting plate to bottom of wheel. The holes measure 3'' apart center to center x 1-3/4'' apart center to center. Units include the original 16 bolt fasteners to secure on your box. Wheels have small chips missing on edges but still roll good. May have cosmetic blemishes from age or use but in good working condition. Unit is being Sold As Is With No Warranty or Guarantee because its old. Buyer is responsible for any return shipping costs. This package will be Shipped Priority Mail for Super Fast Delivery. Please examine pictures for these are the exact items you will be receiving. Seller reserves the right to remove this listing at anytime because the items may be listed on multiple selling platforms. Thanks for shopping and have a great day. LOTKRA3804PC