This extension is used with diamond core drills to allow drilling of very deep holes. It has 1/2" male-female BSP threads and is fitted between the arbor and the core drill.
Total length 200mm
1/2" BSP male to 1/2" BSP female thread
Hollow all the way through
- The actual outside diameter of a 1/2" BSP thread is 20mm. This is because BSP thread sizing is based on the internal sizing of water pipes. Yes it can be confusing.
DOES NOT INCLUDE core drill or arbor, they are shown for demo purposes only.