it is made of Natural rubber, very good quality,both ends with 1/4 male NPT fittings, mainly exported to USA. WP 20bar BP 60 BAR  

The inner and outer layers are composed of synthetic rubber.the middle is man-made synthetic fiber.the apperance is bright red,blue,green or other colors.

RUBBER AIR HOSE
ITEM NO	ID		OD(MM)	WP(PSI)	BP(PSI)	LENGTH (M)/ROLL	PACKGAE
	INCH	MM
STC10	3/16"	5	11.5	300	900	100	Packed with plastic film,then with the nylon bag belt. Or as our customer's required. Some of the hoses are  Shrink wrapped with color label and canton,both ends with fittings.
STC11	1/4"	6	13	300	900	100
STC12	5/16"	8	15	300	900	100
STC13	3/8"	10	17	300	900	100
STC14	1/2"	13	22	300	900	50
STC15	5/8"	16	25	300	900	50
STC16	3/4"	19	28.5	300	900	50
STC17	1"	25	36.5	300	900	50

rubber air hose