Kupo Steel A Clamp Black 2-Pack 4 Inchlike these 4" clamps from Kupo, with black handles and tips, are virtually indispensable on set. Whether it's to keep rolls of seamless from unfurling or for holding bounce cards and reflectors on stands, A clamps are ubiquitous on production sets.

Shown here in a 4" size, this set of four spring-operated clamps are characterized by comfort, strength, and functionality. With features like PVC-coated handles and tips, they protect surfaces from getting scratched, are more comfortable to grab than bare-metal clamps, and provide a convenient and fast mounting solution in all kinds of situations.

Spring-Operated    PVC-Coated Handles & Tips    Solid Steel Construction

Related Questions and Answers

Q: 1. Is this what they use to mount the Kupo Tethermate to the c-stand please?

A: No, the threading on this unit is too large. You will need a 5/8" adapter to 3/8 male, click the link below to view; https://www.bhphotovideo.com/c/product/1047269-REG/matthews_861833_baby_pin_adapter.html

Q: 2. Can this be used on a 2x4 in a ceiling to mount things?

A: No, the Kupo Stage Clamp with 28mm Stud is designed for diameters of about 38-51mm, whereas 2 x 4s are actually 1.5 x 3.5" (38.1 x 88.9mm) because of milling.

Q: 3. Could the Boom Arm hold the Amaran 300c RGB LED Monolight with an Aputure Lantern 90 (3') attached to it?

A: The Kupo Heavy-Duty Steel Baby Boom Arm has a load limit of 15 lb, so you could mount the amaran 300c RGB LED Monolight (Deep Gray), B&H # AM300CDG, and the Aputure Lantern 90 (3'), B&H # APAMOLANTERN.

Q: 4. Do these swivel so one can clamp horizontal and one vertical?

A: The two superclamps have a fixed position.

Q: 5. How does this product work? It doesnt seem to have a compressing/clamping feature.

A: The two spiked pins would secure the foam core to the clamp using the pre-drilled holes. The clamp then inserts into a standard grip head to hold the foam core in any position needed.

Q: 6. Can be used without mounting the central sector ..?

A: You can use the two end pieces with out the center.

Q: 7. I already have the Kupo C-stand with Turtle Base, the steel baby boom arm and the grip head. However, I like the idea of the Kupo Pivoting Boom Arm Clamp. I am having trouble, from the singular image, how it will actually works with the boom arm. It might seem like a silly question, but how does the pole fit into it? Or, is this accessory for another type of boom arm? Thanks for your time!!

A: The riser from a C stand is inserted in the tube that you see in the top of the image of this product. Then you twist the handle on top to tighten it in place. So, this product basically allows you to use a C stand riser as a super-sturdy boom arm.

Q: 8. Can the cold shoe adapter come off?

A: The cold shoe on this clamp can be removed.

Q: 9. Will this clamp fit the Avenger Roller Stand 17?

A: Yes this clamp will fit an Avenger Roller Stand 17.

Q: 10. Are both knobs made of metal?

A: both rotary moving tighteners (if that's what you mean by knobs ) are indeed metal. They are, as I read another response, built like a tankoutstanding product.