MetalTech 10.5 in. x 1.75 in. Coupling Pin Connector in Galvanized Steel with Collar and Spring Lock, Tool for Scaffolding Frames M-MLC1S - The Home Depot
Buying High Quality Spring Clips of Scaffolding Frames Aaccessories Lock Pins from good supplier with the cheap price in China-www.rscaffolding.com
Buffalo 4-Piece Scaffolding Connector Pins at Lowes.com