Comparison : Item # 1317-40-220, 4" Tube O.D. x Close(2-7/8") Length Schedule 40 Seamless Lead Free Brass
Item # 1317-40-221, 4" Tube O.D. x 3" Length Schedule 40 Seamless Lead Free Brass
Item # 1317-40-222, 4" Tube O.D. x 3-1/2" Length Schedule 40 Seamless Lead Free Brass
Item # 1317-40-223, 4" Tube O.D. x 4" Length Schedule 40 Seamless Lead Free Brass
Item # 1317-40-224, 4" Tube O.D. x 4-1/2" Length Schedule 40 Seamless Lead Free Brass