The holder has a female 1/2″ BSW thread so that you can fit it on a double ended brush to keep the camera centralised. (Brush not included with the holder)
If using the camera in a flexi liner you have a choice of two designs of centraliser. Both designs are available with either a male 1/2″ BSW thread or a male 10mm thread. The 1/2″ BSW thread will fit Tamar flexi rods or other rod manufactures 1/2″ BSW adapter. The 10mm version will fit Vipers.
Choose between the rubber segmented design or the ball and petal design made using Whippet Strand.
Before ordering please check your camera looks like the one in the photo which is approximately 24mm in diameter.