Bars:
Small - 3-1/2 inch, 20 per tray 
Carton contains 25 trays.

Small bars measure 3-1/2 x 1/2 x 3/8 inches. They come in a tray of 20 bars. Part numbers end with .10 This format is convenient for working by hand with very small parts.

Bars:
Large - 7 inch, 5 per tray.
Carton contains 100 bars.

The adhesive is cast in bars 7" long x 1" wide x 3/4" deep. Five bars are packed in a thermoformed plastic tray. This format saves peeling of paper wrap. Part numbers end with .61

Sticks:

Most materials are available in a paper tube, 7" long by 7/8" diameter. One end of the stick can be peeled back to apply adhesive. The tube provides easy, insulated handling. This format provides the maximum protection during transit. Part numbers end with .20

Bulk Pans

 Roughly 2.2 Lbs.
Packed in cartons of roughly 36 pounds.

Least expensive packaging. All materials are available in aluminum pans. Weight varies somewhat from one material to another. Charges are based on actual measured weight of the shipment. Part numbers end with .50  

Kilogram Tube 

 Roughly 2.2 Lbs.
Packed in cartons of 10 tubes.

Least expensive packaging. All materials are available in these tubes. Weight varies somewhat from one material to another. Charges are based on actual measured weight of the shipment.  The tubes are packed ten in a carton, with a net weight of 22-29 pounds (10-13 Kg). Part numbers end with .41