When Jamie was giving his shop tour he showed his "favorite" items which were some "Mid Flanged Nipple Headed Shafts". He was not sure what they were, even only in existence in his shop.

This is the 1” spike. Each screw back spike comes with a silver screw for fastening onto clothing, bracelets or anything. Used for Punk clothing and jewelry.

Screw back Spike description
height: 1 inch
base: 3/8 inch
color: silver
finish: nickel
base-metal: brass
shape: round tree-like spike
screw type: inch 8-32, 1/4" length