This is a set of 4 adapter pieces to use the Irwin Quick-Grips clamp/spreader style with the Ryobi track. These are made to fit the Irwin clamps with a part number of 1964758. Please verify first before purchasing. No extra hardware is necessary. Just reuse the existing bolt and nut that is provided with these clamps.

This includes 4 pieces in total to adapt 2 clamps. This includes 2 pieces that replace the removable end of the Irwin Quick-Grip clamp/spreader style with ends that slide into the Ryobi track. It also includes 2 pieces that slide over the clamping end's face, which extends the clamping pad so that you can clamp items up to 6mm thick to the track. 

This item is made from PETG plastic. 

The clamps are not provided with purchase.