Abstract: A device for temporary mounting on a truck or trailer bed permitting the convenient rolling of load straps on binders enabling compact stowage of same. A strap, subsequent to unfastening from the load, is wound about a spindle assembly supported in a detachable manner by a frame member. The spindle about which the strap is rolled may be separated from the frame member, thereby releasing a rolled strap. The spindle assembly and the frame jointly embody means for axial disengagement of the spindle assembly while a lengthwise opening in the spindle permits axial extraction of the spindle from the rolled strap.