Safety Technology International STI-3300 Stopper II Protective Cover - NEW 154772893396 There is some pen writing

There is some pen writing on the handle

Manufacturer Wacom Model Number DTH-2700 SKU 19-69291 Ref 23-107805

Manufacturer Bio-Tek Model Number Tek ELX405U SKU 19-63258 Ref 23-89931

Manufacturer Thorlabs Model Number KM100T SKU 19-77952 Ref 23-112664

The light inside the optical probe input blinks various colors when powered on

Safety Technology International STI-3300 Stopper II Protective Cover - NEW 154772893396 There is some pen writingCondition New Description New, Photos are of the actual item for sale. On hand and ready to ship! Specifics Manufacturer Safety Technology International Model Number STI 3300 UPC 662950002765 SKU 19 85196 Ref 23 124157