Spiral Head owners Did you know that we stock..... 15 x 15 x 2.5mm with four cutting edges. Made in Germany Carbide inserts to fit all Woodmaster spiral heads, as well as Weinig spiral heads several other brands of spiral heads $2.99 each (when ordering 100pcs or more) $3.25 each (when ordering less than 100pcs) Valid to and including March 31st