The RTDL 1.5 (3.81 cm) has a rounded 1.5" (3.81 cm) expansion head that transitions into a 1⅜" (3.49 cm) straight shaft and a 2" (5.08 cm) base flange.
Details
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Overall length: 4.25" (10.79 cm)
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Maximum diameter: 1.5" (3.81 cm)
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Shaft: 1⅜" (3.49 cm) diameter × 2.25" (5.72 cm) long
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Base flange: 2" (5.08 cm)
Choosing your silicone firmness For the RTDL 1.5, Bob recommends #10 Medium. The firmer silicone gives the larger head and shaft more structure while still allowing the piece to flex. #00-50 Soft is also available if you prefer a softer piece. If you're unsure which firmness to choose, we can make firmness samples.
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 standard colors.
Please note The RTDL 1.5 has a 1.5" maximum diameter and a 1⅜" shaft. It is the middle size between the smaller RTDL models and the larger 1.75" and 2" models. Anatomy varies, and no single size or shape will work for everyone. Use appropriate lubrication, never force the product, and stop if you experience pain or significant discomfort. Inspect the silicone before each use. Do not use the product if it is damaged.