Set for terracing with hss drills for hardwood depth stop with countersink and stainless steel bits the hss drills from france are very durable even when used intensively in very hard species such as ipe teak and bangkirai the unique flute ensures optimum chip removal stainless steel bits are necessary for stainless steel screws otherwise rust can arise the depth stop with integrated countersink means that all screws are placed at the same depth so the overall appearance of the