Bessey HS-6 Wood Hand Screw Clamp (6")

Hardwood-jaw parallel hand screw clamp, cold-drawn carbon steel spindles, ACME thread, 6" jaw length / 3" clamping capacity / 3" throat depth.

Bessey is the standard reference brand for hand screw clamps — oiled maple jaws won't mar work or slip, and the angled-jaw design does things bar clamps can't (odd shapes, tapered pieces).