"3 hours trying to get these (Tower BW25 glands) on to SWA cable. Hole in clamping nut is too small at 25.1mm. Shroud is over-large and of soft, floppy plastic. Bought BW25 different brand elsewhere and they went straight on the cable first try because clamping nut hole is 26.8mm. Shroud fitted snugly and is of thick, firm plastic. I don't see how Tower can mark them "BS6121"."