What's the difference between the GST 1003 and the GST 1004?

From what I can tell on the Wilson site:http://www.downtownathletic.com/pdfs/catalogs/wilson/2013-Wilson-Fall.pdf, the 1003 is the "Official Collegiate Pattern" and the 1004 is the "Official Pro Pattern." I think that means the 1003 is just slightly smaller but still within the specs of a collegiate ball. Both are approved for NCAA and NFHS use. I'm guessing the 1003 is used more in high school ball. I hope that helps.

Use your best judgment. Maybe close to it

Is it okay for streets/concrete ?

NO!!!!! This is one of the best,BUT IT IS NOT made for concrete or hard abrasive surfaces. It wont last long on concrete or hard abrasive surfaces. It is best for Grass or turf use only!

I need to know if this ball (wilson f1780 gst composite) is nfhs approved. can anyone certify that to me?

The 1780 is stamped NFHS. However it's only approved for on-field play, not in-game play. Meaning it's size is functionally appropriate for practice. The Wilson "Game" & "Prime" balls are NFHS & NCAA approved for official game use.

Brand	WILSON
Material	Leather
Color	Brown
Age Range (Description)	Adult
Item Weight	16 ounces
Sport	American Football
Item Diameter	11 Inches
Number of Items	1
Team Name	USA
League	NFL
Construction Type	handcrafted
Size	Official
Global Trade Identification Number	00026388745180
Stitching Type	Sewn
UPC	026388745180
Unit Count	1.0 Count
Item Package Dimensions L x W x H	11.61 x 6.93 x 6.61 inches
Package Weight	0.52 Kilograms
Item Dimensions LxWxH	6.75 x 11.5 x 6.5 inches
Brand Name	WILSON
Country of Origin	United States
Warranty Description	1 Year Manufacturer
Model Name	Wilson GST Leather Football
Suggested Users	unisex-adult
Manufacturer	Wilson
Part Number	YEV-612
Model Year	2010
Style	Game
Included Components	Football

WILSONGST Leather Game Football - Official

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