Part Number Model Overall Length Tube Dia Bell OD Bell Length
18033-027 H1/A/C 14 1/2" 35mm 38.5mm 1 5/8"
18033-048 S2/A 10 3/4" 19.5mm 39.5mm  
18033-050 S1/A/B 14 5/8" 19.5mm 39.5mm  
18033-051 H1B 14 1/8" 21.8mm 44.5mm 3/4"
18033-051 S3/A 14 1/8" 21.8mm 44.5mm 3/4"
18033-056 H2/A/B/C        
18033-064 H1D/E/F KH 15 1/4" 22.8mm 44.7mm 2"
18033-087 S1C KH 15 1/8" 21.8mm 44.5mm 3/4"
18033-097 KH400 15 3/8" 21.8mm 44.5mm 3/4"
18033-105 KH400 Euro   21.8mm 44.5mm 3/4"


Note: KH400 is actually about 1" longer than S3


Tube OD = 0.85" (21.5mm)   Bell OD = 1.75" (44.5mm)


Tube OD = 0.90" (22.8mm)   Bell OD = 1.76" (44.7mm)

Cutaway Comparison