WGC Air Probe w/ Duraplate Master Setting Ring Gage CLASS XX # 59.550 MM 11L This is awesome metric Ring gage set. This is HARD to find. I do not know much about these or what they go to. These come in original boxes, but are slightly used. Got them at factory overstock sale FREE SHIP ** I have many more of these gages from WGC. I will give you a deal if you want multiples. Please see my other listings. My partner is listing the Standard and I am listing the Metric. WGC Air Probe w/ Duraplate Master Setting Ring Gage CLASS XX # 59.550 MM 11L This is awesome metric Ring gage set. This is HARD to find. I do not know much about these or what they go to. These come in original boxes, but are slightly used. Got them at factory overstock sale FREE SHIP ** I have many more of these gages from WGC. I will give you a deal if you want multiples. Please see my other listings. My partner is listing the Standard and I am listing the Metric. Recommended products Provided by WGC Air Probe w/ Duraplate Master Setting Ring Gage CLASS XX # 61.650 MM 11L View item WGC Air Probe with Duraplate Master Setting Ring Gage CLASS XX # 57.550 MM 11L View item WGC Air Probe w/ Duraplate Master Setting Ring Gage CLASS XX # 60.426 MM 11G View item NEW WGC Air Probe w/ Duraplate Master Setting Ring Gage CLASS XX # 2.2735 13C View item WGC Air Probe w/ Duraplate Master Setting Ring Gage CLASS XX # 58.900 MM 11G View item WGC Air Probe with Duraplate Master Setting Ring Gage CLASS XX # 58.266 MM 11G View item WGC Air Probe with Duraplate Master Setting Ring Gage CLASS XX # 58.346 MM 11G View item WGC Air Probe w/ Duraplate Master Setting Ring Gage # 52.452 MM ID# 999 10d View item