Part Number: 1026546 - Infinity RS4, 1026548 - Infinity RS7, 1026550 - Infinity TS9 & Infinity FTS9, 1026601 - Universal Bolt on System (for Non-ShoreMaster Docks)
Product Description: Connect your Quick Steps to your dock easily. Select the appropriate Infinity Dock System style for easy Infinity Dock System connections or the Universal Bracket to bolt your steps onto nearly any dock systems on the market. 
Included in the Box: 
1 x Part Numbers Vary - Wdmt Stair Connection
1 x 1026545 Shore Stairs Accessory Bolt Bag