Glass educational device for teaching and demonstrations. Use with care to avoid injury. If the head wears, it should be replaced to maintain performance. Key features Replaceable components: the wheel and the head are replaceable, extending tool life and ensuring consistent operation. Scoring design: the tubing is designed to score the circumference of the tube for controlled handling. Small tube compatibility: adapted to small glass tubes for precise, handson work. Easy hand operation: circular tweezers provide smooth, convenient hand operation. Product details Material: glass device, designed to work with small glass tubes. Function: enables circumferential scoring on glass tubes with a replaceable wheel and head. Size and fit: compatible with small glass tubes; compact, handfriendly design. Usage scenarios Educational demonstrations: ideal for classroom teaching to show how glass tubes are scored and prepared. Laboratory setup: useful in smallscale experiments where precise circumferential scoring of glass tubes is needed. Training environments: suitable for handson practice in workshops or technical training sessions, providing reliable performance with replaceable components. Maintenance and safety Inspect the head regularly and if worn to maintain accurate scoring and safe operation. Handle with appropriate eye and hand protection during use.