3/16 stainless steel clip with black leather pull tab.  The 231 SCBA clip allows the firefighter to release their SCBA mask with a gloved or ungloved hand with a simple tug. This clip is a game changer for masking up.
 
The 231 SCBA clip can be used with any SCBA that has a clip on one of the should straps.
 
As always, shipping is included for any order in the USA and the product is guaranteed for the career of the firefighter.