Generally you would already have a basic concave flute created on your piece before you would use this F-2B stake to further refine the shape.  That is why this stake is available both individually and in a set (8141109) so you can easily use the flute stakes in succession.  After beginning the flute with the F-2A stake, you would then use this F-2B to further refine the shape, and finish with the F-2C to sharpen the high points. Fretz stakes are made from hardened 420-grade stainless steel with highly polished areas to prevent scratching or marring your workpiece. Designed for use with Fretz H-1 or VH-1 holders (any holders shown in the picture are not included but are sold separately). Made in Vietnam.