E-9117 Drill Press Vises All faces are finished except the handle end face. (P150, P250, P350, P400) Top faces and side faces have a ground finish for high accuracy. Jaw plates are fitted to both the main body and movable body. (Excluding the P770) The P350, P400, P300, and P770 use an Acme thread for the feed screws, allowing the powerful clamping. The handle lever stop ball is cold headed, and absolutely will not fall off.