Powertec Fitness Roller Smith System, Black Back by popular demand, the WB-RS incorporates a revolutionary carriage system for the smooth weight training experience The WB-RS13 allows for a range of exercises to be performed; Expand with the optional WB-UB and WB-LTO making this the only machine you need The optional WB-LTO13 requires a "Lat Tower Option Connector" to connect with the Roller System machine; The connector is sold separate Weight Capacity - Smith Roller: 450 lbs.; Lat Tower Option: 300 lbs.; Low Lever Pulley: 300lbs.; Weights, Bench and Lat Tower Sold Separate