This is a non-flammable, water based contact cement! You use this glue just like any other contact cement... apply to both pieces of leather that you want to glue, let it sit for a minute until it gets tacky, then attach the two pieces together. It does take a little bit longer to dry than Neoweld, but it does dry relatively quickly; and it dries clear! Made in USA, designed mainly for handbag and accessory manufacturers.