Check the listing for details. 37mm PVS-14 Lens Cap With Optional Pinhole. Color: Black, Condition: New. Listed at 14.99 USD. This is for a 37mm lens. If you are looking for 30mm then check my other listings. Printed in PLA+ with a pin hole already in the design. The Velcro covers the pin hole because in my survey it was half and half who wanted the pin hole. So if you want it then you just need to poke through the Velcro with something. The back has a larger pilot hole as well if you want to go bigger than a pin hole. Velcro on the front for easy stowage anywhere on your kit that has Velcro. For those of you wondering. A standard PVS14 lens is going to be 30mm and the iris lens mod like the tarsier from matbock are 37mm Price is for a single cap so if you need 2 you will need to order 2. I've added volume discounting for those of you who need 2. Also not a bad idea to have an extra velcroed somewhere just in case.