Rod Diameter: 7/16" (0.4375") Rod Length: 14.1" Clamp Length: 12.6" Fits LayFlat Bag Sizes P00020 - L=13" W=12" Open End P00021 - L=25" W=12" Open End Material: Polyethylene Homopolymer (Petrotene® NA317009) Ideal for bags with openings no larger than 12" and material thickness less than 5.0mil is ideal. Clip-n-Seal® is an innovative, patent-pending product that provides a simple, convenient, and easy way to close and reseal opened bags for an air and watertight seal. Clip-n-Seal's® rod-and-clamp design is easy to use, sturdy, and nearly unbreakable. The soft plastic and ergonomic shape provides a comfortable gripping surface to easily clip the pieces together and pull them apart. Clip-n-Seal® works by forming an air- and watertight seal when a bag is closed between the rod and clamp. It's reusable, washable, and practically indestructible. If you'd like a custom size, Clip-n-Seal® can be cut to the length you desire. We recommend whatever the bag width, add 1/4" to the length of the clamp and add 1" to the length of the rod. Based on MSDS on LDPE from manfuacturer: -Minimum Operating Temperature (Min temperature: -135C/-211F) -Maximum Operating Temperature (Max temperature: 135C/275F) -Burst strength 2.7 PSI