4.0 mil low density gusseted utility bags on rolls are extra heavy-duty poly bags designed for maximum protection of equipment, parts, and materials from dust, moisture, and contaminants. Manufactured from high-strength LDPE (low density polyethylene), these gusseted utility bags deliver superior puncture resistance and durability for the most demanding industrial applications. The 4.0 mil thickness supports handling of heavy or sharp items, while expandable gusseted sides provide increased capacity for bulky loads. Supplied on convenient rolls for efficient dispensing, they are widely used in manufacturing, warehousing, and food processing. Ideal to buy in bulk, with bulk supply and wholesale pricing available.