... . 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 ... bits for soil stabilizers, commonly use round shank, Wirtgen Code is like W6 / 22 etc.Actually we can make ... drawings and requests Road Planing bits Road cutting tools