For sale is a Tapmatic Model R3 Tapping Head for use with Drill Presses. No.0 To 1/4" (M1.4 to M6 metric) tapping capacity. 2,000 RPM maximum tapping speed. Marked "#33JT". Made in the USA. This Tapmatic Tapping Head is in very good condition; ready to thread some holes. Fits Jacobs spindles accepting 633C chucks and comes with a hard to find retaining ring.