Cutting show can be fitted with different Betek/Kennametal bars. 

Welded bars suitable for heavy oscillator work in hard soil, gravel, rock, concrete in secant pile wall. 

Quick change bars suitable for rotary drilling in sand, cohesive soil, marl, soft rock like, claystone and formation of rock sockets and the construction of bored pile walls. 

Features:

Optimum shape for milling of soil, for cutting and reaming. Round milling front with hard metal inserts allow variable tooth inclination. Hard metal tips on the outside of the inclined shoulder. Eases extraction of casing. Aggressive cutting behaviour.