The Avenger C1575B Super Clamp has strong jaws that open up to 2.16″, then lock securely with the ergonomic twist handle. It has 1/4″-20 female threads, a dual locking 5/8″ hexagonal female receiver for studs and arms and 2 included wedges for clamping onto flat surfaces.

Specs

Construction:              Aluminum, black paint
Load Capacity:           33 lb (15 kg)
Attachment Size:       5/8″ Receiver
1/4″-20 Female threaded socket
Range:                      Jaws: 0.5 – 2.16″ (13 – 55 mm)
Weight                      0.99 lbs (0.45 kg)