The GRB 54 is a 9" graduated retaining-ball nozzle with a long tapered entry followed by three expanding sections. The first section reaches 1.125", followed by two larger 1.4" ball sections separated by valleys. The final section narrows to a 0.75" retention neck near the base.

Details

• Overall length: 9" (22.86 cm)

• Tapered entry: 4" long, starting at 0.75" (19.1 mm)

• First expansion: 1.125" (28.6 mm)

• Second expansion: 1.4" (35.6 mm)

• Main expansion: 1.4" (35.6 mm)

• Final retention neck: 0.75" (19.1 mm)

Choosing your silicone firmness

For the GRB 54, Bob recommends #10 Medium. The firmer silicone gives the graduated sections enough structure to maintain their shape while still allowing the nozzle to flex.

Color options

#18 and #30 are available in pure translucent silicone.

#00-50 and #10 use a translucent white base and can be mixed with our standard colors.

Please note

The GRB 54 is a long nozzle with multiple expansion sections, including two 1.4" sections. It is a good choice for someone who wants a graduated design rather than a single large expansion.

Anatomy varies, and no single size or shape will work for everyone. Use appropriate lubrication, never force insertion, and stop if you experience pain or significant discomfort. Inspect the nozzle before each use and do not use it if damaged.