Drill rod threads: tips to avoid common problems and ...
2018-4-20 · The adapter has a ready made thread for drill bit connection. On the other side you can make your thread for drill rod connection. This is an adapter for threading. Below are photos of drill bits of all diameters: Drill bit Ø200 mm 4-wings Drill bit Ø200 мм 3-wings Drill bit Ø180 mm 4-wings Drill bit Ø180 mm 3-wings Drill bit Ø160 mm 4-wings Drill bit Ø160 mm 3-wings Drill bit Ø150 mm 4-wings
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