Comparison : Item # 12109, Rice Lake 1 Gram (g) ASTM Class 2 Individual Screw Knob Stainless Steel (SST) Weight
Item # 12109AC, Rice Lake 1 Gram (g) ASTM Class 2 Individual Screw Knob Stainless Steel (SST) with Accredited Certificate
Item # 12110, Rice Lake 2 Gram (g) ASTM Class 2 Individual Screw Knob Stainless Steel (SST) Weight
Item # 12110AC, Rice Lake 2 Gram (g) ASTM Class 2 Individual Screw Knob Stainless Steel (SST) with Accredited Certificate
Item # 12111, Rice Lake 3 Gram (g) ASTM Class 2 Individual Screw Knob Stainless Steel (SST) Weight