Scaffold/Speedrail on Wheel Connection Bolt (42–51 mm)
This adapter clamps to Scaffold and Speedrail tubes with outside diameters ranging from 41–51 mm. It works for all common tube sizes (i. e. 1-1/4" speedrail, standard scaffold (1-1/2"/48.3 mm). The base of the adapter has a 3/8" threaded hole, which accepts the GF-Grip Kit Wheel Connector Bolt (AL-1535) for mounting track and skateboard wheels. The Wheel Connector Bolt (AL-1535) is connected by using a 3/8" to M10 adapter screw.