“U.S.A.A.F. C.A.A.P. 330 615”. Body Type: Extruded. Body Material: Dichromate. Body Size: 1 3/4″Wx1 19/32″H. Shackle Material: Steel. Shackle Size: 11/32″Dx13/16″H. Key Type: Single Sided 6 Pins.