Dr. Slick · Fly tying bobbin holders
Dr. Slick ECO E-BOB4 4-Inch Glass Bobbin Holder
The four-inch ECO holder pairs brass spool feet with two glass inserts in the thread path.

Description
Use the E-BOB4 if you want a simple glass-insert holder with a little more overall length than a compact three-inch tool. It also makes sense as a second holder if you want to keep another thread color ready. The brass feet are the contact points for the spool.
Specifications
- Selected reference
- Dr. Slick ECO E-BOB4 4-Inch Glass Bobbin Holder
- Brand
- Dr. Slick
- Documented details
- E-BOB4 model
- 4 in overall
- Dual glass inserts
- Brass spool feet
- Stainless steel and brass
- Amazon.com reference
- B006FCHJFG
Fit and buying advice
Compare the GBOB3 if you want a shorter tool with Delrin feet and a shaped grip. If you want to change resistance on a dedicated dial while tying, compare a drag-adjustable holder such as the Rite Standard.
Questions about this tool
Can I leave another color loaded in it?
Yes, if your spool fits. Keeping a second holder threaded avoids feeding the tube again at each color change.
Are the brass feet the inserts?
The brass feet hold the spool. The glass inserts line the thread path, so they serve a separate purpose.
What if four inches is too long at my vise?
Compare the three-inch GBOB3 if your hand needs more space. Measure the complete tool where you normally tie.
Related buying guides
- Match a bobbin holder to your spool and thread ↗
Compare drag controls, tube size and working reach using the thread spools you already own.


