Hol-66. Wt = 1.2g. Diam = ~9mm
Photo from Zeno posted by Edward Madlin

Wt = 1.2g. Diam = ~9mm
Photo from Zeno posted by

Wt = 1.32g. Diam = ~10mm
Photo from Zeno posted by xpoleg

Wt = 1.4g. Diam = ~8.8-9.2mm
Photo from Zeno posted by bkveder