Erickson™ Taper Face Contact Shank Tooling System • BTKV50 Series Erickson Taper Face BT Contact Taper Tooling is manufactured from premium materials and to the latest JIS B 6339 specification standard. Controlled, increased flange thickness to the rear of the flange gains face contact between spindle and holder. BTKV50 2 controlled drive key widths. Face contact. Large chamfer lead-in. Tool changer V-groove. Metric drawbar. 7/24 taper. C20 WWW.WIDIA.COM