Mines are not refillable.These 8-oz. mines can be staked to the ground and used as trip or pull mines. These mines are very versatile and can be hung from or nailed to a tree and used as a pull mine! You can put the mine in almost any position with the cap pointing at any path or opening. These trip mines have a 15 ft blast radius. Mines come with two 30-foot lengths of line, four stakes, eight wire ties, and instruction sheet. Each bag contains two mines. Mines are not refillable.