... : LTC, STC, BTCSize Destination: 4 1/2''-20''Wall thickness:5.21mm~16.13mmLength: R1, R2, R3Weight Destination: 9.50-133 ... ''-20''(114.3mm-508.00mm)WT: 0.205''-0.635''(5.21mm-16.13mm)Product Description 1.Size : 1/2"----48 ... is used for extracting oil or gas from wells.5 Thread and socket:BTC, LTC, STC, EUE ect6 Packing: in bundle, non ...