CT1 Labels are an industry standard sized label measuring 21mm x 12mm. They are characterised by a semi-circular punch hole in the top and bottom edges of the label.

Positive ID can provide CT1 labels in plain or pre-printed format with a choice of colours and adhesives:
Colours: White, Pantone, Dayglo
Adhesives: Permanent, Peelable, Waterproof, Freezer

CT1 Labels fit many brands of label gun including:
Apollo 7
Apollo Mk 2
Danro 2212PH
Datamark 21112
Easyply Mk 2
Labelmark
Labelmate
Lotus A1Lynx PH6
Lynx CPH6
Motex 5500
Pricemaster Hallo 1Y
Puma P-JH6/JH8
Shinsei 1 Line
Silverline GS
Towa GS