... ×9,12×8, 8×6,10×7.5mm, 4-22mm etc.• Protection:spring or plastic• O.D. of turn:110,90 ... ,80,70,60,50mm etc.• Helix turns/coil:12,16,18,20,22,24,26 ... length:5m,5.5m,6.5m,7.5m.8m,12m etc.• Explosion Pressure :4Mpa(=40Bar) to 10Mpa(=100Bar)• Fitting:With two ... M16,M18 ,M22 ,1/2"fittings etc. or no fitting• Type:European style, American style, ordinary ...