Renzetti Sw Large Diameter Ruby Tip Bobbin

Renzetti Sw Large Diameter Ruby Tip Bobbin is the extended Saltwater version, pairing a large 1/8-inch internal-diameter tube with a ruby tip. This geometry provides more clearance for heavier tying threads used on larger patterns, while the additional reach makes it easier to work around long hook shanks and substantial streamer wings. Positioned at the thread exit, the ruby reduces friction against the tube edge and supports smooth, even delivery.

This is a conventional spring-arm bobbin, not a dial- or disc-drag model. Spool resistance comes from pressure applied by the flexible arms, while tapered spool supports help keep the spool centred and secure. The straightforward construction makes changing thread colour or size quick and preserves direct feedback as tension is applied through successive wraps.

Before tying, seat the spool between the supports and check that it turns without tilting. If resistance is too low or too high, gently press the arms inward or spread them outward by equal amounts, making small adjustments. Match the thread to the tube clearance and the pattern being tied: Saltwater identifies the longer format intended for larger flies, not a mechanical tension-control system.

Key working features

• Ruby tip provides a smooth thread exit and helps reduce fraying.
• The 1/8-inch internal-diameter tube provides clearance for heavier tying threads.
• Extended construction improves reach on large, three-dimensional patterns.
• Spring arms allow resistance to be set by carefully adjusting their spacing.
• Tapered spool supports keep the spool stable as thread is drawn off.