The GRB 36 is a 9" graduated retaining-ball nozzle with a long tapered entry followed by three progressively larger expansion sections. The first section reaches 1", the second reaches 1.1", and the final oval ball reaches 1.4" at its widest point. The expansion sections are separated by narrower valleys. Near the base, the body narrows to a 0.75" retention valley before reaching the safety flange.

Details

• Overall length: 9" (22.86 cm)

• Insertable length: approximately 7.5" (19.05 cm)

• Tapered entry: 2.25" long × 0.75" (19.1 mm) diameter

• First expansion: 1" (25.4 mm)

• First valley: 0.7" (17.8 mm)

• Second expansion: 1.1" (27.9 mm)

• Final expansion ball: 1.4" (35.6 mm)

• Base retention valley: 1" long × 0.75" (19.1 mm) diameter

Choosing your silicone firmness

For the GRB 36, Bob recommends #10 Medium. The medium firmness gives the graduated sections enough structure to hold 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 36 has a relatively narrow 0.75" entry and progresses through 1", 1.1", and 1.4" expansion sections. It is a good choice for someone who wants a graduated design with several increasing sizes rather than one 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.