Tophammer drill bit RoX+ 88,9/4

with buttons

Pilot, Top Hammer, Single-use Forepoling Anchoring Casing OD mm 88,9 Casing OD inch 3 ½ Casing Max Wall mm 4 Casing Max Wall inch 0.157 Ring bit ID mm 71 Ring bit ID inch 2.795 Ring bit OD mm 99 Ring bit OD inch 3.898 Pilot bit OD mm 80 Pilot bit OD inch 3.150 Thread C38 Product number 02-238-088-0022