Brad point drill bit, our product line 3500 (CV), with assembled countersink product line 2100 incl. allen key. Drilling and countersinking in one single operation. Well suitable for soft wood and limited applicable for European hard wood. For hard wood we recommend our brad point drill bit, product line 1594 (HSS-G) and adjustable countersink product line VARIO 2202. Put the depth adjusting collar 2108.216 directly on the countersink and set the lowering depth.