This is a small diameter hose used for wildland fires. It is a single jacketed hose instead of the standard double jacket making it very light weight. 

Because of the size 100 foot sections of hose are often rolled into a twin roll instead of a single roll.

This is a 1.5" single jacket hose used for wildland fires.

1.5", 1.75" and 2" are popular sizes of hose for pre-connected quick attack lines. The protective jacket is much thicker than hose used for wildland fires.

This is a large diameter attack line. This also used to be a popular size for supplying pumpers but modern high capacity pumps require a larger supply hose. 

Another large diameter attack line, it does not offer much in attack over the 2.5" but can efficiently supply twice as much water to a pumper making it a useful dual purpose line. 

A short section of 2.5". Hoses like this are often used by brush engines to fill from fire hydrants.

4" and 5" hose are commonly known as LDH (large diameter hose) and are used for supplying pumpers.

Hose is available in many sizes and colors. Many departments color code their hose to aid identification.

More hose.

Hoses showing female couplings, 1.75" hose with 1.5" couplings, 2.5" coupling, and 3" hose with 2.5" couplings. 

Most fire hydrants have a 4.5" connection, this is a 4.5" coupling used to connect a pumper to a hydrant. 

Stortz couplings are a unisex connection commonly used on large diameter hose.

2.5" and 5" hard sleeve suction hoses used to allow a pumper to draw water from a static source such as a pool or pond. Drafting hose comes in sizes from 1.5" to 6". Larger sizes may be found for special purpose apparatus like New York Cities Superpumper.

Close up of the male coupling of draft hose.

Close up of the female coupling of draft hose. The "wings" on either side allow a rubber mallet to be used to tighten or loosen the connection.  

Very large or tall buildings often have special plumbing for firefighters known as standpipes. Fires in these buildings require hose to be carried into the building while the pumper connects to the standpipe outside. This pack includes 150 feet of 1.75" hose. 

This is another hose pack with 150 feet of 1.75" hose. It also includes a tool pouch.

Two sizes of hose pack, the one on the right holds 150 feet of 1.75" hose and a tool pouch. The one on the left carries 50 feet of 2.5" hose and 75 feet of 1.75" hose, it also has a wye allowing two hose lines to be used from the 2.5" hose.

This is another hose pack, it includes 100 feet of 1.75" hose and a tool pouch.

Wildland fires often require long hose lays, which are extended as the firefighters progress. Packs like this are used to carry the hose.

Another view of the pack.

This is another style of hose pack.

Another view of the pack.

This style of hose pack allows rolled hose to be carried. It includes a tool pouch.

Another view of the pack.

This style of pack is made with nylon cord, the hose forms the straps of the pack.