Broncolor Speedring Insert: Match Softboxes to Strobes

Quick answer

Buy the insert that matches your strobe mount first, then confirm it fits your softbox or beauty dish. For Broncolor Pulso, Primo, and Unilite strobes, the Fotodiox Pro 152mm (6in) Speedring Insert is the direct replacement to check when your modifier uses a 6-inch outer-diameter insert.

Insert diameter and ring type are two separate checks

A speedring insert is the metal plate that adapts a light modifier's speedring to a specific strobe mount. Two dimensions matter: the insert's outer diameter must match the speedring opening, and the center pattern must accept your strobe's mount. A 6-inch insert will not fit a ring bored for a different diameter, even if the strobe mount is correct.

The Fotodiox Pro 152mm insert has a 6-inch (15.2 cm) outer diameter and is listed for Broncolor Pulso, Primo, and Unilite strobes. That makes it a fit check for modifiers designed around that insert size, not a universal adapter.

Replacement parts vs. complete speedrings

Many photographers buy an insert as a spare or to switch one softbox between strobe brands. If you already own a compatible speedring, replacing only the insert is usually cheaper and keeps your existing modifier. If you are starting from scratch, confirm whether your softbox ships with a ring or needs one separately.

The catalog describes this insert as a replacement part for several Fotodiox modifier families, including EZ-Pro softboxes, Deep EZ-Pro parabolic softboxes, EZ-Pro beauty dishes, and Lantern softboxes. That wording signals it is intended for those systems rather than as a generic fit for every softbox on the market.

Beauty dishes and softboxes use the same insert logic

A beauty dish speedring insert follows the same rules as a softbox insert: match the ring opening and the strobe mount. The difference is handling. Beauty dishes are often heavier and more rigid, so a secure metal insert matters more than with a lightweight softbox.

The Fotodiox insert is all-metal and interchangeable. Metal construction helps resist deformation when you tighten a dish or large softbox, but it does not replace checking that the insert seats fully in the ring before you mount the modifier on a stand.

When the catalog does not list your strobe

If your strobe is not named in the compatibility list, do not assume the insert fits. The supplied specs name Broncolor Pulso, Primo, and Unilite, plus Flashman and compatible models. For any other mount, measure the insert opening and compare the center pattern before ordering.

Absence of a listed spec is a real limitation, not a hint. If the product page does not state a dimension you need, treat that as a reason to verify with the manufacturer rather than guess.

Decision rules for buying a Broncolor speedring insert

• Rule 1: Match the strobe mount first: If you shoot Broncolor Pulso, Primo, or Unilite, the Fotodiox Pro 152mm insert is the listed fit. If you shoot another brand, stop and verify the mount pattern before considering this insert. Write down your exact strobe model before you shop.
• Rule 2: Measure the speedring opening: Confirm your softbox or beauty dish speedring accepts a 6-inch (15.2 cm) outer-diameter insert. If the ring opening is different, this insert will not seat correctly regardless of strobe mount. Measure the ring opening, not just the insert.
• Rule 3: Choose replacement only when the ring is reusable: Buy the insert as a replacement if your existing speedring is in good condition and only the insert needs changing. If the ring itself is damaged or missing, price a complete speedring instead. Inspect the ring for bends or cracks before ordering a replacement insert.
• Rule 4: Treat unlisted modifiers as unconfirmed: The insert is described for specific Fotodiox modifier families. For any softbox or dish not named in the compatibility list, confirm fit with the manufacturer before purchase. No listed fit means verify, not assume.

Product facts

• Fotodiox Pro 152mm (6in) Speedring Insert for Most Softboxes, Beauty Dishes and More - Bronocolor (Pulso, Primo, and Unilite), Flashman, and Compatible: All-metal interchangeable speedring insert with a 6-inch (15.2 cm) outer diameter, listed for Broncolor Pulso, Primo, and Unilite strobes. The metal build and stated diameter let you check ring fit before buying, and the named strobe list tells you whether your head is covered.

  

Who this insert is for

Best for

• Photographers using Broncolor Pulso, Primo, or Unilite strobes with a 6-inch insert speedring
• Owners of compatible Fotodiox EZ-Pro softboxes, parabolic softboxes, or beauty dishes who need a replacement insert

Not for

• Strobes with mounts not listed in the compatibility specs
• Speedrings that do not accept a 6-inch outer-diameter insert