http://is.gd/LHWe9e
XS Scuba Adjustable Spanned Wrench
Remove and Replace the End-Cap Assembly of First Stage Regulators
Fits Multiple Model and Brand Regulators
Adjustable Range of 0.75" to 2.0"
Three Spanner Pins included: 0.185", 0.152" and 0.122"
Must for the Serious Diver