The Model A is one of the larger STPs and measures 5.5in/14cm from the top lip to the tip of the head. The Model A is also bulkier with a studier receptacle cup. The Model A is easy to use and requires no flow control.
Designed to help reduce chafing and tacky feel of silicone, this platinum silicone product has a clean, soft powder finish. The outer silicone 'skin' is soft to the touch.
The Model A is available in a cut or uncut option.