From WoWDev

ItemDisplayInfo.dbc

This client database contains display information for items, clothes, weapons, equipment etc.

Fields

Field ID	Type	Description
0	uint	ItemDisplayID
1	string	Model 1 filename
2	string	Model 2 filename
3	string	Model 1 texture
4	string	Model 2 texture
5	string	Inventory icon
6	uint	Geoset A
7	uint	Geoset B
8	uint	Geoset C
9	uint	?
10	uint	?
11	uint	Flags?
12	uint	?
13	uint	?
14	string	Texture: arm upper
15	string	Texture: arm lower
16	string	Texture: hands
17	string	Texture: chest upper
18	string	Texture: chest lower
19	string	Texture: leg upper
20	string	Texture: leg lower
21	string	Texture: feet
22	uint	VisualID

Field descriptions

The meaning of some of the columns changes depending on what item type the display record represents. The textures for the various regions, if present, should be overlaid onto the character's texture (which already contains the base skin + looks).

Helmet: Model 1 contains the helmet model

Shoulders: Model 1 for the left shoulder, Model 2 for the right shoulder

Shirt, chest armor, robe: GeosetA + 801 gives the geoset ID for the shirt sleeves

Pants: GeosetB + 901 gives the geoset ID for the pants sleeves, or whatever that's called

Boots: GeosetA + 501 gives the geoset ID for the boots or the lower leg

Gloves: GeosetA + 401 gives the geoset ID for the gloves or the hands.

Cape: GeosetA + 1501 gives the geoset ID for the cape or the character's capeless back. The cape texture (replacable id 2) is in the Model 1 texture column. (there is no model, however)

For robes or skirts, 1301 + GeosetC s the geoset ID for the skirt part of the model.

Other geoset IDs, not yet figured out: 1002 and 1102 for bottoms of shirts (?), 1202 for kilts.