WBC – Metal carrier holds 6 WB or WBCRV
PH – Puck holder attaches to WBC, holds 5 pucks, two puck holders may be used with one WBC
PLWBC – Plastic carrier holds 6 WB or WBCRV, has slots for pucks on each end
WBC16 – Plastic carrier holds 16 WB20EXT or WB30EXT