Trenching tooth ,Trenching bits,Asphalt cutter,Concrete cutter,Stabilizer bits, ... . Machine. Specifications with Round shank19. 4mm and 22mm. Wirtgen Code is like W4, W5, W6, W7, W1-13 etc., ... etc.2. Trenching BitTrenching bits for trenching beside the roadKennametal Code is like RL08, RL09, RL07 etc.. 3. Stabilizer ... customers' samples or other drawings and requests. Trenching tooth Trenching bits