Ronstan splicing kit — five-piece stainless steel fids set, 4–13mm for double-braid, hollow-braid & three-strand rope

Ronstan Splicing Kit (55376) is a five-piece set of highly polished stainless steel Selma fids designed to splice a wide range of rope types and sizes cleanly and reliably.

This compact kit collects the most commonly used fid sizes so you can prepare and finish splices on double-braided, hollow-braided and three-strand lines without hunting for separate tools. Each fid is made from polished stainless steel for smooth entry into rope, reduced friction, and long service life in marine and outdoor environments. The set covers a broad span of diameters so you can work with small control lines up to substantial dock and mooring cords.

Which ropes and diameters can I splice with this kit?

The Ronstan five-fid set accommodates most recreational and light commercial rope splicing tasks. It supports hollow and double-braided ropes from very small control lines to mid-sized mooring lines, plus solid three-strand cordage used for traditional splices.

• Hollow and double-braided: approximately 1/8" to 9/16" (suitable for fids sized 4, 5.5, 7.5, 10, 13 mm)
• Three-strand or twine: up to about 1-1/8" in diameter for classic eye and short splices
• Ideal for ropes used in sailing, rigging, camping, and utility applications

How does the stainless steel construction affect performance?

Polished stainless steel offers smooth surfaces that pass through braid with minimal snagging, while resisting corrosion in wet or salty conditions. That makes the fids easier to insert and reduces wear on both the tool and the rope during multiple splicing operations.

• Polished finish reduces friction for cleaner tucks and less rope abrasion
• Stainless steel resists rust and holds up to marine exposure
• Rigid, tapered profiles maintain consistent entry and leverage

What are the included fid sizes and when should I use each?

The kit includes five graduated fids to cover a wide range of rope dimensions and splice types. Select the fid that matches the rope’s core diameter and braid construction for neat, secure splices without overstretching or cutting fibers.

• 4 mm — for very small control and trim lines
• 5.5 mm — for light double-braid and small hollow ropes
• 7.5 mm — versatile mid-size for common sheets and halyards
• 10 mm — heavier braid and small dock mooring lines
• 13 mm — larger lines and three-strand up to the kit’s maximum

How should I care for and store these fids?

Proper care keeps the fids smooth and reliable for years. Wipe them clean after use, store dry, and keep them in a protective pouch to prevent nicks or surface corrosion from metal-on-metal contact.

• Rinse fresh water after salt exposure and dry thoroughly
• Store in a padded pouch to protect the polished finish
• Inspect tips for burrs and lightly polish if needed to maintain smooth entry

Who is this for: The Ronstan Splicing Kit (55376) is ideal for sailors, rigger technicians, deckhands, and outdoor enthusiasts who do their own ropework and need a compact, durable set of fids. It suits anyone who regularly splices double-braided or hollow ropes as well as those who still use traditional three-strand cordage. Note: this product contains chemicals including Diisononyl Phthalate (DINP); see California Proposition 65 guidance for details.